Finding the Fourth Proportional to 123,920.26, 185,884.42 and 58,990.57

Step by Step Solution

1. Step 1: Write the proportion equation
   123,920.26 : 185,884.42 = 58,990.57 : x
2. Step 2: Convert to fraction form
   123,920.26/185,884.42 = 58,990.57/x
3. Step 3: Cross multiply
   123,920.26x = 185,884.42 × 58,990.57
4. Step 4: Simplify right side
   123,920.26x = 10,965,427,889.92
5. Step 5: Solve for x
   x = 10,965,427,889.92/123,920.26
6. Step 6: Final answer
   x = 88,487.78