Finding the Fourth Proportional to 78,358.72, 108,133.94 and 42,550.12

Step by Step Solution

1. Step 1: Write the proportion equation
   78,358.72 : 108,133.94 = 42,550.12 : x
2. Step 2: Convert to fraction form
   78,358.72/108,133.94 = 42,550.12/x
3. Step 3: Cross multiply
   78,358.72x = 108,133.94 × 42,550.12
4. Step 4: Simplify right side
   78,358.72x = 4,601,112,123.07
5. Step 5: Solve for x
   x = 4,601,112,123.07/78,358.72
6. Step 6: Final answer
   x = 58,718.57