Finding the Fourth Proportional to 78,587.52, 108,452.16 and 42,778.56

Step by Step Solution

1. Step 1: Write the proportion equation
   78,587.52 : 108,452.16 = 42,778.56 : x
2. Step 2: Convert to fraction form
   78,587.52/108,452.16 = 42,778.56/x
3. Step 3: Cross multiply
   78,587.52x = 108,452.16 × 42,778.56
4. Step 4: Simplify right side
   78,587.52x = 4,639,427,233.69
5. Step 5: Solve for x
   x = 4,639,427,233.69/78,587.52
6. Step 6: Final answer
   x = 59,035.17