Finding the Fourth Proportional to 185,580.09, 256,103.50 and 100,697.15

Step by Step Solution

1. Step 1: Write the proportion equation
   185,580.09 : 256,103.50 = 100,697.15 : x
2. Step 2: Convert to fraction form
   185,580.09/256,103.50 = 100,697.15/x
3. Step 3: Cross multiply
   185,580.09x = 256,103.50 × 100,697.15
4. Step 4: Simplify right side
   185,580.09x = 25,788,892,555.03
5. Step 5: Solve for x
   x = 25,788,892,555.03/185,580.09
6. Step 6: Final answer
   x = 138,963.68