Finding the Fourth Proportional to 72,158.88, 107,966.04 and 42,592.80

Step by Step Solution

1. Step 1: Write the proportion equation
   72,158.88 : 107,966.04 = 42,592.80 : x
2. Step 2: Convert to fraction form
   72,158.88/107,966.04 = 42,592.80/x
3. Step 3: Cross multiply
   72,158.88x = 107,966.04 × 42,592.80
4. Step 4: Simplify right side
   72,158.88x = 4,598,575,948.51
5. Step 5: Solve for x
   x = 4,598,575,948.51/72,158.88
6. Step 6: Final answer
   x = 63,728.48