Finding the Fourth Proportional to 258,323.31, 387,663.71 and 100,552.59

Step by Step Solution

1. Step 1: Write the proportion equation
   258,323.31 : 387,663.71 = 100,552.59 : x
2. Step 2: Convert to fraction form
   258,323.31/387,663.71 = 100,552.59/x
3. Step 3: Cross multiply
   258,323.31x = 387,663.71 × 100,552.59
4. Step 4: Simplify right side
   258,323.31x = 38,980,589,586.75
5. Step 5: Solve for x
   x = 38,980,589,586.75/258,323.31
6. Step 6: Final answer
   x = 150,898.46