Finding the Fourth Proportional to 42,939.72, 59,251.86 and 25,954.20

Step by Step Solution

1. Step 1: Write the proportion equation
   42,939.72 : 59,251.86 = 25,954.20 : x
2. Step 2: Convert to fraction form
   42,939.72/59,251.86 = 25,954.20/x
3. Step 3: Cross multiply
   42,939.72x = 59,251.86 × 25,954.20
4. Step 4: Simplify right side
   42,939.72x = 1,537,834,624.81
5. Step 5: Solve for x
   x = 1,537,834,624.81/42,939.72
6. Step 6: Final answer
   x = 35,813.80