Finding the Fourth Proportional to 72,441.24, 99,973.71 and 40,612.20

Step by Step Solution

1. Step 1: Write the proportion equation
   72,441.24 : 99,973.71 = 40,612.20 : x
2. Step 2: Convert to fraction form
   72,441.24/99,973.71 = 40,612.20/x
3. Step 3: Cross multiply
   72,441.24x = 99,973.71 × 40,612.20
4. Step 4: Simplify right side
   72,441.24x = 4,060,152,305.26
5. Step 5: Solve for x
   x = 4,060,152,305.26/72,441.24
6. Step 6: Final answer
   x = 56,047.53