Finding the Fourth Proportional to 42,190.74, 58,229.01 and 25,420.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,190.74 : 58,229.01 = 25,420.50 : x
2. Step 2: Convert to fraction form
   42,190.74/58,229.01 = 25,420.50/x
3. Step 3: Cross multiply
   42,190.74x = 58,229.01 × 25,420.50
4. Step 4: Simplify right side
   42,190.74x = 1,480,210,548.71
5. Step 5: Solve for x
   x = 1,480,210,548.71/42,190.74
6. Step 6: Final answer
   x = 35,083.78