Finding the Fourth Proportional to 116,667.48, 161,013.20 and 71,375.61

Step by Step Solution

1. Step 1: Write the proportion equation
   116,667.48 : 161,013.20 = 71,375.61 : x
2. Step 2: Convert to fraction form
   116,667.48/161,013.20 = 71,375.61/x
3. Step 3: Cross multiply
   116,667.48x = 161,013.20 × 71,375.61
4. Step 4: Simplify right side
   116,667.48x = 11,492,415,011.17
5. Step 5: Solve for x
   x = 11,492,415,011.17/116,667.48
6. Step 6: Final answer
   x = 98,505.73