Finding the Fourth Proportional to 42,128.48, 58,136.18 and 23,265.20

Step by Step Solution

1. Step 1: Write the proportion equation
   42,128.48 : 58,136.18 = 23,265.20 : x
2. Step 2: Convert to fraction form
   42,128.48/58,136.18 = 23,265.20/x
3. Step 3: Cross multiply
   42,128.48x = 58,136.18 × 23,265.20
4. Step 4: Simplify right side
   42,128.48x = 1,352,549,854.94
5. Step 5: Solve for x
   x = 1,352,549,854.94/42,128.48
6. Step 6: Final answer
   x = 32,105.36