Finding the Fourth Proportional to 72,513.61, 108,766.02 and 43,118.50

Step by Step Solution

1. Step 1: Write the proportion equation
   72,513.61 : 108,766.02 = 43,118.50 : x
2. Step 2: Convert to fraction form
   72,513.61/108,766.02 = 43,118.50/x
3. Step 3: Cross multiply
   72,513.61x = 108,766.02 × 43,118.50
4. Step 4: Simplify right side
   72,513.61x = 4,689,827,633.37
5. Step 5: Solve for x
   x = 4,689,827,633.37/72,513.61
6. Step 6: Final answer
   x = 64,675.14