Finding the Fourth Proportional to 72,432, 99,956.52 and 42,238.26

Step by Step Solution

1. Step 1: Write the proportion equation
   72,432 : 99,956.52 = 42,238.26 : x
2. Step 2: Convert to fraction form
   72,432/99,956.52 = 42,238.26/x
3. Step 3: Cross multiply
   72,432x = 99,956.52 × 42,238.26
4. Step 4: Simplify right side
   72,432x = 4,221,989,480.46
5. Step 5: Solve for x
   x = 4,221,989,480.46/72,432
6. Step 6: Final answer
   x = 58,289.01