Finding the Fourth Proportional to 147,426.55, 221,178.09 and 42,253.72

Step by Step Solution

1. Step 1: Write the proportion equation
   147,426.55 : 221,178.09 = 42,253.72 : x
2. Step 2: Convert to fraction form
   147,426.55/221,178.09 = 42,253.72/x
3. Step 3: Cross multiply
   147,426.55x = 221,178.09 × 42,253.72
4. Step 4: Simplify right side
   147,426.55x = 9,345,596,690.50
5. Step 5: Solve for x
   x = 9,345,596,690.50/147,426.55
6. Step 6: Final answer
   x = 63,391.55