Finding the Fourth Proportional to 78,673.48, 108,566.48 and 42,862.72

Step by Step Solution

1. Step 1: Write the proportion equation
   78,673.48 : 108,566.48 = 42,862.72 : x
2. Step 2: Convert to fraction form
   78,673.48/108,566.48 = 42,862.72/x
3. Step 3: Cross multiply
   78,673.48x = 108,566.48 × 42,862.72
4. Step 4: Simplify right side
   78,673.48x = 4,653,454,633.63
5. Step 5: Solve for x
   x = 4,653,454,633.63/78,673.48
6. Step 6: Final answer
   x = 59,148.96