Finding the Fourth Proportional to 78,070.71, 107,648.42 and 62,155.83

Step by Step Solution

1. Step 1: Write the proportion equation
   78,070.71 : 107,648.42 = 62,155.83 : x
2. Step 2: Convert to fraction form
   78,070.71/107,648.42 = 62,155.83/x
3. Step 3: Cross multiply
   78,070.71x = 107,648.42 × 62,155.83
4. Step 4: Simplify right side
   78,070.71x = 6,690,976,582.51
5. Step 5: Solve for x
   x = 6,690,976,582.51/78,070.71
6. Step 6: Final answer
   x = 85,704.06