Finding the Fourth Proportional to 91,279.77, 136,935.22 and 40,697.15

Step by Step Solution

1. Step 1: Write the proportion equation
   91,279.77 : 136,935.22 = 40,697.15 : x
2. Step 2: Convert to fraction form
   91,279.77/136,935.22 = 40,697.15/x
3. Step 3: Cross multiply
   91,279.77x = 136,935.22 × 40,697.15
4. Step 4: Simplify right side
   91,279.77x = 5,572,872,300.46
5. Step 5: Solve for x
   x = 5,572,872,300.46/91,279.77
6. Step 6: Final answer
   x = 61,052.66