Finding the Fourth Proportional to 72,445.24, 99,977.02 and 42,225.69

Step by Step Solution

1. Step 1: Write the proportion equation
   72,445.24 : 99,977.02 = 42,225.69 : x
2. Step 2: Convert to fraction form
   72,445.24/99,977.02 = 42,225.69/x
3. Step 3: Cross multiply
   72,445.24x = 99,977.02 × 42,225.69
4. Step 4: Simplify right side
   72,445.24x = 4,221,598,653.64
5. Step 5: Solve for x
   x = 4,221,598,653.64/72,445.24
6. Step 6: Final answer
   x = 58,272.96