Finding the Fourth Proportional to 72,070.53, 99,462.24 and 40,238.76

Step by Step Solution

1. Step 1: Write the proportion equation
   72,070.53 : 99,462.24 = 40,238.76 : x
2. Step 2: Convert to fraction form
   72,070.53/99,462.24 = 40,238.76/x
3. Step 3: Cross multiply
   72,070.53x = 99,462.24 × 40,238.76
4. Step 4: Simplify right side
   72,070.53x = 4,002,237,204.42
5. Step 5: Solve for x
   x = 4,002,237,204.42/72,070.53
6. Step 6: Final answer
   x = 55,532.23