Finding the Fourth Proportional to 72,652.79, 108,978.48 and 43,049.31

Step by Step Solution

1. Step 1: Write the proportion equation
   72,652.79 : 108,978.48 = 43,049.31 : x
2. Step 2: Convert to fraction form
   72,652.79/108,978.48 = 43,049.31/x
3. Step 3: Cross multiply
   72,652.79x = 108,978.48 × 43,049.31
4. Step 4: Simplify right side
   72,652.79x = 4,691,448,368.85
5. Step 5: Solve for x
   x = 4,691,448,368.85/72,652.79
6. Step 6: Final answer
   x = 64,573.55