Finding the Fourth Proportional to 42,078.72, 58,080.96 and 26,155.20

Step by Step Solution

1. Step 1: Write the proportion equation
   42,078.72 : 58,080.96 = 26,155.20 : x
2. Step 2: Convert to fraction form
   42,078.72/58,080.96 = 26,155.20/x
3. Step 3: Cross multiply
   42,078.72x = 58,080.96 × 26,155.20
4. Step 4: Simplify right side
   42,078.72x = 1,519,119,124.99
5. Step 5: Solve for x
   x = 1,519,119,124.99/42,078.72
6. Step 6: Final answer
   x = 36,101.84