Finding the Fourth Proportional to 72,444.62, 99,978.37 and 40,615.58

Step by Step Solution

1. Step 1: Write the proportion equation
   72,444.62 : 99,978.37 = 40,615.58 : x
2. Step 2: Convert to fraction form
   72,444.62/99,978.37 = 40,615.58/x
3. Step 3: Cross multiply
   72,444.62x = 99,978.37 × 40,615.58
4. Step 4: Simplify right side
   72,444.62x = 4,060,678,883.57
5. Step 5: Solve for x
   x = 4,060,678,883.57/72,444.62
6. Step 6: Final answer
   x = 56,052.18