Finding the Fourth Proportional to 91,160.91, 136,740.56 and 31,982.72

Step by Step Solution

1. Step 1: Write the proportion equation
   91,160.91 : 136,740.56 = 31,982.72 : x
2. Step 2: Convert to fraction form
   91,160.91/136,740.56 = 31,982.72/x
3. Step 3: Cross multiply
   91,160.91x = 136,740.56 × 31,982.72
4. Step 4: Simplify right side
   91,160.91x = 4,373,334,199.51
5. Step 5: Solve for x
   x = 4,373,334,199.51/91,160.91
6. Step 6: Final answer
   x = 47,973.79