Finding the Fourth Proportional to 143,313.68, 215,009.40 and 49,826.72

Step by Step Solution

1. Step 1: Write the proportion equation
   143,313.68 : 215,009.40 = 49,826.72 : x
2. Step 2: Convert to fraction form
   143,313.68/215,009.40 = 49,826.72/x
3. Step 3: Cross multiply
   143,313.68x = 215,009.40 × 49,826.72
4. Step 4: Simplify right side
   143,313.68x = 10,713,213,171.17
5. Step 5: Solve for x
   x = 10,713,213,171.17/143,313.68
6. Step 6: Final answer
   x = 74,753.60