Finding the Fourth Proportional to 82,842,971.86, 124,264,454.28 and 78,700,500.10

Step by Step Solution

1. Step 1: Write the proportion equation
   82,842,971.86 : 124,264,454.28 = 78,700,500.10 : x
2. Step 2: Convert to fraction form
   82,842,971.86/124,264,454.28 = 78,700,500.10/x
3. Step 3: Cross multiply
   82,842,971.86x = 124,264,454.28 × 78,700,500.10
4. Step 4: Simplify right side
   82,842,971.86x = 9,779,674,696,489,584
5. Step 5: Solve for x
   x = 9,779,674,696,489,584/82,842,971.86
6. Step 6: Final answer
   x = 118,050,746.82