Finding the Fourth Proportional to 72,032.50, 99,416.37 and 42,224.50

Step by Step Solution

1. Step 1: Write the proportion equation
   72,032.50 : 99,416.37 = 42,224.50 : x
2. Step 2: Convert to fraction form
   72,032.50/99,416.37 = 42,224.50/x
3. Step 3: Cross multiply
   72,032.50x = 99,416.37 × 42,224.50
4. Step 4: Simplify right side
   72,032.50x = 4,197,806,515.07
5. Step 5: Solve for x
   x = 4,197,806,515.07/72,032.50
6. Step 6: Final answer
   x = 58,276.56