Finding the Fourth Proportional to 78,501.63, 108,331.71 and 42,691.54

Step by Step Solution

1. Step 1: Write the proportion equation
   78,501.63 : 108,331.71 = 42,691.54 : x
2. Step 2: Convert to fraction form
   78,501.63/108,331.71 = 42,691.54/x
3. Step 3: Cross multiply
   78,501.63x = 108,331.71 × 42,691.54
4. Step 4: Simplify right side
   78,501.63x = 4,624,847,530.73
5. Step 5: Solve for x
   x = 4,624,847,530.73/78,501.63
6. Step 6: Final answer
   x = 58,914.03