Finding the Fourth Proportional to 103,560,738,789.31, 141,875,852,761.90 and 99,688,769,092.15

Step by Step Solution

1. Step 1: Write the proportion equation
   103,560,738,789.31 : 141,875,852,761.90 = 99,688,769,092.15 : x
2. Step 2: Convert to fraction form
   103,560,738,789.31/141,875,852,761.90 = 99,688,769,092.15/x
3. Step 3: Cross multiply
   103,560,738,789.31x = 141,875,852,761.90 × 99,688,769,092.15
4. Step 4: Simplify right side
   103,560,738,789.31x = 14,143,429,125,732,919,410,688
5. Step 5: Solve for x
   x = 14,143,429,125,732,919,410,688/103,560,738,789.31
6. Step 6: Final answer
   x = 136,571,342,490.20