Finding the Fourth Proportional to 72,435.26, 108,606.72 and 42,862.16

Step by Step Solution

1. Step 1: Write the proportion equation
   72,435.26 : 108,606.72 = 42,862.16 : x
2. Step 2: Convert to fraction form
   72,435.26/108,606.72 = 42,862.16/x
3. Step 3: Cross multiply
   72,435.26x = 108,606.72 × 42,862.16
4. Step 4: Simplify right side
   72,435.26x = 4,655,118,609.72
5. Step 5: Solve for x
   x = 4,655,118,609.72/72,435.26
6. Step 6: Final answer
   x = 64,265.92