Finding the Fourth Proportional to 256,300.32, 384,182.88 and 87,770.88

Step by Step Solution

1. Step 1: Write the proportion equation
   256,300.32 : 384,182.88 = 87,770.88 : x
2. Step 2: Convert to fraction form
   256,300.32/384,182.88 = 87,770.88/x
3. Step 3: Cross multiply
   256,300.32x = 384,182.88 × 87,770.88
4. Step 4: Simplify right side
   256,300.32x = 33,720,069,458.53
5. Step 5: Solve for x
   x = 33,720,069,458.53/256,300.32
6. Step 6: Final answer
   x = 131,564.68