Finding the Fourth Proportional to 91,158.45, 136,751.32 and 31,983.69

Step by Step Solution

1. Step 1: Write the proportion equation
   91,158.45 : 136,751.32 = 31,983.69 : x
2. Step 2: Convert to fraction form
   91,158.45/136,751.32 = 31,983.69/x
3. Step 3: Cross multiply
   91,158.45x = 136,751.32 × 31,983.69
4. Step 4: Simplify right side
   91,158.45x = 4,373,812,378.77
5. Step 5: Solve for x
   x = 4,373,812,378.77/91,158.45
6. Step 6: Final answer
   x = 47,980.33