Finding the Fourth Proportional to 414,056.63, 621,216.17 and 147,811.25

Step by Step Solution

1. Step 1: Write the proportion equation
   414,056.63 : 621,216.17 = 147,811.25 : x
2. Step 2: Convert to fraction form
   414,056.63/621,216.17 = 147,811.25/x
3. Step 3: Cross multiply
   414,056.63x = 621,216.17 × 147,811.25
4. Step 4: Simplify right side
   414,056.63x = 91,822,737,868.86
5. Step 5: Solve for x
   x = 91,822,737,868.86/414,056.63
6. Step 6: Final answer
   x = 221,763.72