Finding the Fourth Proportional to 42,858.72, 59,173.20 and 26,120.16

Step by Step Solution

1. Step 1: Write the proportion equation
   42,858.72 : 59,173.20 = 26,120.16 : x
2. Step 2: Convert to fraction form
   42,858.72/59,173.20 = 26,120.16/x
3. Step 3: Cross multiply
   42,858.72x = 59,173.20 × 26,120.16
4. Step 4: Simplify right side
   42,858.72x = 1,545,613,451.71
5. Step 5: Solve for x
   x = 1,545,613,451.71/42,858.72
6. Step 6: Final answer
   x = 36,062.99