Finding the Fourth Proportional to 83,715.16, 125,412.34 and 80,901.22

Step by Step Solution

1. Step 1: Write the proportion equation
   83,715.16 : 125,412.34 = 80,901.22 : x
2. Step 2: Convert to fraction form
   83,715.16/125,412.34 = 80,901.22/x
3. Step 3: Cross multiply
   83,715.16x = 125,412.34 × 80,901.22
4. Step 4: Simplify right side
   83,715.16x = 10,146,011,309.05
5. Step 5: Solve for x
   x = 10,146,011,309.05/83,715.16
6. Step 6: Final answer
   x = 121,196.82