Finding the Fourth Proportional to 78,672.20, 108,567.42 and 42,862.52

Step by Step Solution

1. Step 1: Write the proportion equation
   78,672.20 : 108,567.42 = 42,862.52 : x
2. Step 2: Convert to fraction form
   78,672.20/108,567.42 = 42,862.52/x
3. Step 3: Cross multiply
   78,672.20x = 108,567.42 × 42,862.52
4. Step 4: Simplify right side
   78,672.20x = 4,653,473,211.10
5. Step 5: Solve for x
   x = 4,653,473,211.10/78,672.20
6. Step 6: Final answer
   x = 59,150.16