Finding the Fourth Proportional to 82,842,970.86, 124,264,452.78 and 78,700,499.10

Step by Step Solution

1. Step 1: Write the proportion equation
   82,842,970.86 : 124,264,452.78 = 78,700,499.10 : x
2. Step 2: Convert to fraction form
   82,842,970.86/124,264,452.78 = 78,700,499.10/x
3. Step 3: Cross multiply
   82,842,970.86x = 124,264,452.78 × 78,700,499.10
4. Step 4: Simplify right side
   82,842,970.86x = 9,779,674,454,174,382
5. Step 5: Solve for x
   x = 9,779,674,454,174,382/82,842,970.86
6. Step 6: Final answer
   x = 118,050,745.32