Finding the Fourth Proportional to 143,558.31, 215,382.71 and 67,653.78

Step by Step Solution

1. Step 1: Write the proportion equation
   143,558.31 : 215,382.71 = 67,653.78 : x
2. Step 2: Convert to fraction form
   143,558.31/215,382.71 = 67,653.78/x
3. Step 3: Cross multiply
   143,558.31x = 215,382.71 × 67,653.78
4. Step 4: Simplify right side
   143,558.31x = 14,571,454,478.14
5. Step 5: Solve for x
   x = 14,571,454,478.14/143,558.31
6. Step 6: Final answer
   x = 101,501.99