Finding the Fourth Proportional to 256,827.82, 385,145.94 and 88,300.43

Step by Step Solution

1. Step 1: Write the proportion equation
   256,827.82 : 385,145.94 = 88,300.43 : x
2. Step 2: Convert to fraction form
   256,827.82/385,145.94 = 88,300.43/x
3. Step 3: Cross multiply
   256,827.82x = 385,145.94 × 88,300.43
4. Step 4: Simplify right side
   256,827.82x = 34,008,552,114.75
5. Step 5: Solve for x
   x = 34,008,552,114.75/256,827.82
6. Step 6: Final answer
   x = 132,417.71