Finding the Fourth Proportional to 58,366.35, 80,870.84 and 57,105.18

Step by Step Solution

1. Step 1: Write the proportion equation
   58,366.35 : 80,870.84 = 57,105.18 : x
2. Step 2: Convert to fraction form
   58,366.35/80,870.84 = 57,105.18/x
3. Step 3: Cross multiply
   58,366.35x = 80,870.84 × 57,105.18
4. Step 4: Simplify right side
   58,366.35x = 4,618,143,874.95
5. Step 5: Solve for x
   x = 4,618,143,874.95/58,366.35
6. Step 6: Final answer
   x = 79,123.40