Finding the Fourth Proportional to 69,561.32, 104,108.70 and 57,080.84

Step by Step Solution

1. Step 1: Write the proportion equation
   69,561.32 : 104,108.70 = 57,080.84 : x
2. Step 2: Convert to fraction form
   69,561.32/104,108.70 = 57,080.84/x
3. Step 3: Cross multiply
   69,561.32x = 104,108.70 × 57,080.84
4. Step 4: Simplify right side
   69,561.32x = 5,942,612,047.31
5. Step 5: Solve for x
   x = 5,942,612,047.31/69,561.32
6. Step 6: Final answer
   x = 85,429.83