Finding the Fourth Proportional to 72,511.61, 108,763.02 and 43,116.50

Step by Step Solution

1. Step 1: Write the proportion equation
   72,511.61 : 108,763.02 = 43,116.50 : x
2. Step 2: Convert to fraction form
   72,511.61/108,763.02 = 43,116.50/x
3. Step 3: Cross multiply
   72,511.61x = 108,763.02 × 43,116.50
4. Step 4: Simplify right side
   72,511.61x = 4,689,480,751.83
5. Step 5: Solve for x
   x = 4,689,480,751.83/72,511.61
6. Step 6: Final answer
   x = 64,672.14