Finding the Fourth Proportional to 72,430.29, 99,966.24 and 42,233.31

Step by Step Solution

1. Step 1: Write the proportion equation
   72,430.29 : 99,966.24 = 42,233.31 : x
2. Step 2: Convert to fraction form
   72,430.29/99,966.24 = 42,233.31/x
3. Step 3: Cross multiply
   72,430.29x = 99,966.24 × 42,233.31
4. Step 4: Simplify right side
   72,430.29x = 4,221,905,203.45
5. Step 5: Solve for x
   x = 4,221,905,203.45/72,430.29
6. Step 6: Final answer
   x = 58,289.22