Finding the Fourth Proportional to 83,265,719.86, 124,970,324.32 and 57,724,665.40

Step by Step Solution

1. Step 1: Write the proportion equation
   83,265,719.86 : 124,970,324.32 = 57,724,665.40 : x
2. Step 2: Convert to fraction form
   83,265,719.86/124,970,324.32 = 57,724,665.40/x
3. Step 3: Cross multiply
   83,265,719.86x = 124,970,324.32 × 57,724,665.40
4. Step 4: Simplify right side
   83,265,719.86x = 7,213,870,155,813,402
5. Step 5: Solve for x
   x = 7,213,870,155,813,402/83,265,719.86
6. Step 6: Final answer
   x = 86,636,735.60