Finding the Fourth Proportional to 42,290.10, 58,356.27 and 25,290.90

Step by Step Solution

1. Step 1: Write the proportion equation
   42,290.10 : 58,356.27 = 25,290.90 : x
2. Step 2: Convert to fraction form
   42,290.10/58,356.27 = 25,290.90/x
3. Step 3: Cross multiply
   42,290.10x = 58,356.27 × 25,290.90
4. Step 4: Simplify right side
   42,290.10x = 1,475,882,588.94
5. Step 5: Solve for x
   x = 1,475,882,588.94/42,290.10
6. Step 6: Final answer
   x = 34,899.01