Finding the Fourth Proportional to 78,812.57, 108,761.33 and 43,002.72

Step by Step Solution

1. Step 1: Write the proportion equation
   78,812.57 : 108,761.33 = 43,002.72 : x
2. Step 2: Convert to fraction form
   78,812.57/108,761.33 = 43,002.72/x
3. Step 3: Cross multiply
   78,812.57x = 108,761.33 × 43,002.72
4. Step 4: Simplify right side
   78,812.57x = 4,677,033,128.32
5. Step 5: Solve for x
   x = 4,677,033,128.32/78,812.57
6. Step 6: Final answer
   x = 59,343.74