Finding the Fourth Proportional to 78,675.48, 108,569.24 and 42,864.72

Step by Step Solution

1. Step 1: Write the proportion equation
   78,675.48 : 108,569.24 = 42,864.72 : x
2. Step 2: Convert to fraction form
   78,675.48/108,569.24 = 42,864.72/x
3. Step 3: Cross multiply
   78,675.48x = 108,569.24 × 42,864.72
4. Step 4: Simplify right side
   78,675.48x = 4,653,790,073.21
5. Step 5: Solve for x
   x = 4,653,790,073.21/78,675.48
6. Step 6: Final answer
   x = 59,151.72