Finding the Fourth Proportional to 441,753.72, 662,693.91 and 142,134.72

Step by Step Solution

1. Step 1: Write the proportion equation
   441,753.72 : 662,693.91 = 142,134.72 : x
2. Step 2: Convert to fraction form
   441,753.72/662,693.91 = 142,134.72/x
3. Step 3: Cross multiply
   441,753.72x = 662,693.91 × 142,134.72
4. Step 4: Simplify right side
   441,753.72x = 94,191,813,343.56
5. Step 5: Solve for x
   x = 94,191,813,343.56/441,753.72
6. Step 6: Final answer
   x = 213,222.46