Finding the Fourth Proportional to 256,892.06, 385,339.67 and 67,350.72

Step by Step Solution

1. Step 1: Write the proportion equation
   256,892.06 : 385,339.67 = 67,350.72 : x
2. Step 2: Convert to fraction form
   256,892.06/385,339.67 = 67,350.72/x
3. Step 3: Cross multiply
   256,892.06x = 385,339.67 × 67,350.72
4. Step 4: Simplify right side
   256,892.06x = 25,952,903,882.31
5. Step 5: Solve for x
   x = 25,952,903,882.31/256,892.06
6. Step 6: Final answer
   x = 101,026.49