Finding the Fourth Proportional to 898,611,771.48, 1,240,060,456.86 and 502,138,018.98

Step by Step Solution

1. Step 1: Write the proportion equation
   898,611,771.48 : 1,240,060,456.86 = 502,138,018.98 : x
2. Step 2: Convert to fraction form
   898,611,771.48/1,240,060,456.86 = 502,138,018.98/x
3. Step 3: Cross multiply
   898,611,771.48x = 1,240,060,456.86 × 502,138,018.98
4. Step 4: Simplify right side
   898,611,771.48x = 622,681,501,223,114,112
5. Step 5: Solve for x
   x = 622,681,501,223,114,112/898,611,771.48
6. Step 6: Final answer
   x = 692,937,173.74