Finding the Fourth Proportional to 609,086,109.29, 913,521,165.89 and 277,015,337.96

Step by Step Solution

1. Step 1: Write the proportion equation
   609,086,109.29 : 913,521,165.89 = 277,015,337.96 : x
2. Step 2: Convert to fraction form
   609,086,109.29/913,521,165.89 = 277,015,337.96/x
3. Step 3: Cross multiply
   609,086,109.29x = 913,521,165.89 × 277,015,337.96
4. Step 4: Simplify right side
   609,086,109.29x = 253,059,374,500,989,120
5. Step 5: Solve for x
   x = 253,059,374,500,989,120/609,086,109.29
6. Step 6: Final answer
   x = 415,473,888.90