Finding the Fourth Proportional to 128,047.30, 191,826.15 and 68,863.30

Step by Step Solution

1. Step 1: Write the proportion equation
   128,047.30 : 191,826.15 = 68,863.30 : x
2. Step 2: Convert to fraction form
   128,047.30/191,826.15 = 68,863.30/x
3. Step 3: Cross multiply
   128,047.30x = 191,826.15 × 68,863.30
4. Step 4: Simplify right side
   128,047.30x = 13,209,781,715.30
5. Step 5: Solve for x
   x = 13,209,781,715.30/128,047.30
6. Step 6: Final answer
   x = 103,163.30