Finding the Fourth Proportional to 91,061.67, 136,592.52 and 71,104.89

Step by Step Solution

1. Step 1: Write the proportion equation
   91,061.67 : 136,592.52 = 71,104.89 : x
2. Step 2: Convert to fraction form
   91,061.67/136,592.52 = 71,104.89/x
3. Step 3: Cross multiply
   91,061.67x = 136,592.52 × 71,104.89
4. Step 4: Simplify right side
   91,061.67x = 9,712,396,109.42
5. Step 5: Solve for x
   x = 9,712,396,109.42/91,061.67
6. Step 6: Final answer
   x = 106,657.35