Finding the Fourth Proportional to 78,920.74, 108,909.25 and 43,109.83

Step by Step Solution

1. Step 1: Write the proportion equation
   78,920.74 : 108,909.25 = 43,109.83 : x
2. Step 2: Convert to fraction form
   78,920.74/108,909.25 = 43,109.83/x
3. Step 3: Cross multiply
   78,920.74x = 108,909.25 × 43,109.83
4. Step 4: Simplify right side
   78,920.74x = 4,695,059,252.93
5. Step 5: Solve for x
   x = 4,695,059,252.93/78,920.74
6. Step 6: Final answer
   x = 59,490.82