Finding the Fourth Proportional to 413,111.31, 619,480.05 and 146,878.92

Step by Step Solution

1. Step 1: Write the proportion equation
   413,111.31 : 619,480.05 = 146,878.92 : x
2. Step 2: Convert to fraction form
   413,111.31/619,480.05 = 146,878.92/x
3. Step 3: Cross multiply
   413,111.31x = 619,480.05 × 146,878.92
4. Step 4: Simplify right side
   413,111.31x = 90,988,560,980.94
5. Step 5: Solve for x
   x = 90,988,560,980.94/413,111.31
6. Step 6: Final answer
   x = 220,251.92