Finding the Fourth Proportional to 603,274,012,111.47, 905,003,999,088.27 and 205,687,609,480.12

Step by Step Solution

1. Step 1: Write the proportion equation
   603,274,012,111.47 : 905,003,999,088.27 = 205,687,609,480.12 : x
2. Step 2: Convert to fraction form
   603,274,012,111.47/905,003,999,088.27 = 205,687,609,480.12/x
3. Step 3: Cross multiply
   603,274,012,111.47x = 905,003,999,088.27 × 205,687,609,480.12
4. Step 4: Simplify right side
   603,274,012,111.47x = 186,148,109,142,414,965,342,208
5. Step 5: Solve for x
   x = 186,148,109,142,414,965,342,208/603,274,012,111.47
6. Step 6: Final answer
   x = 308,563,116,270.99