Finding the Fourth Proportional to 78,312.76, 108,068.42 and 42,501.48

Step by Step Solution

1. Step 1: Write the proportion equation
   78,312.76 : 108,068.42 = 42,501.48 : x
2. Step 2: Convert to fraction form
   78,312.76/108,068.42 = 42,501.48/x
3. Step 3: Cross multiply
   78,312.76x = 108,068.42 × 42,501.48
4. Step 4: Simplify right side
   78,312.76x = 4,593,067,791.26
5. Step 5: Solve for x
   x = 4,593,067,791.26/78,312.76
6. Step 6: Final answer
   x = 58,650.31