Finding the Fourth Proportional to 149,636.16, 224,489.88 and 56,142.72

Step by Step Solution

1. Step 1: Write the proportion equation
   149,636.16 : 224,489.88 = 56,142.72 : x
2. Step 2: Convert to fraction form
   149,636.16/224,489.88 = 56,142.72/x
3. Step 3: Cross multiply
   149,636.16x = 224,489.88 × 56,142.72
4. Step 4: Simplify right side
   149,636.16x = 12,603,472,475.67
5. Step 5: Solve for x
   x = 12,603,472,475.67/149,636.16
6. Step 6: Final answer
   x = 84,227.45