Finding the Fourth Proportional to 78,452.61, 108,265.25 and 42,642.63

Step by Step Solution

1. Step 1: Write the proportion equation
   78,452.61 : 108,265.25 = 42,642.63 : x
2. Step 2: Convert to fraction form
   78,452.61/108,265.25 = 42,642.63/x
3. Step 3: Cross multiply
   78,452.61x = 108,265.25 × 42,642.63
4. Step 4: Simplify right side
   78,452.61x = 4,616,714,784.39
5. Step 5: Solve for x
   x = 4,616,714,784.39/78,452.61
6. Step 6: Final answer
   x = 58,847.18