Finding the Fourth Proportional to 42,857.58, 59,129.72 and 27,761.81

Step by Step Solution

1. Step 1: Write the proportion equation
   42,857.58 : 59,129.72 = 27,761.81 : x
2. Step 2: Convert to fraction form
   42,857.58/59,129.72 = 27,761.81/x
3. Step 3: Cross multiply
   42,857.58x = 59,129.72 × 27,761.81
4. Step 4: Simplify right side
   42,857.58x = 1,641,548,061.01
5. Step 5: Solve for x
   x = 1,641,548,061.01/42,857.58
6. Step 6: Final answer
   x = 38,302.40