Finding the Fourth Proportional to 258,068.30, 387,106.35 and 89,593.98

Step by Step Solution

1. Step 1: Write the proportion equation
   258,068.30 : 387,106.35 = 89,593.98 : x
2. Step 2: Convert to fraction form
   258,068.30/387,106.35 = 89,593.98/x
3. Step 3: Cross multiply
   258,068.30x = 387,106.35 × 89,593.98
4. Step 4: Simplify right side
   258,068.30x = 34,682,398,579.77
5. Step 5: Solve for x
   x = 34,682,398,579.77/258,068.30
6. Step 6: Final answer
   x = 134,392.32