Finding the Fourth Proportional to 185,530.50, 256,032.72 and 100,648.16

Step by Step Solution

1. Step 1: Write the proportion equation
   185,530.50 : 256,032.72 = 100,648.16 : x
2. Step 2: Convert to fraction form
   185,530.50/256,032.72 = 100,648.16/x
3. Step 3: Cross multiply
   185,530.50x = 256,032.72 × 100,648.16
4. Step 4: Simplify right side
   185,530.50x = 25,769,222,167.80
5. Step 5: Solve for x
   x = 25,769,222,167.80/185,530.50
6. Step 6: Final answer
   x = 138,894.80