Finding the Fourth Proportional to 416,521.98, 624,785.03 and 100,978.89

Step by Step Solution

1. Step 1: Write the proportion equation
   416,521.98 : 624,785.03 = 100,978.89 : x
2. Step 2: Convert to fraction form
   416,521.98/624,785.03 = 100,978.89/x
3. Step 3: Cross multiply
   416,521.98x = 624,785.03 × 100,978.89
4. Step 4: Simplify right side
   416,521.98x = 63,090,098,818.02
5. Step 5: Solve for x
   x = 63,090,098,818.02/416,521.98
6. Step 6: Final answer
   x = 151,468.83