Finding the Fourth Proportional to 42,145.32, 58,140.80 and 27,030.72

Step by Step Solution

1. Step 1: Write the proportion equation
   42,145.32 : 58,140.80 = 27,030.72 : x
2. Step 2: Convert to fraction form
   42,145.32/58,140.80 = 27,030.72/x
3. Step 3: Cross multiply
   42,145.32x = 58,140.80 × 27,030.72
4. Step 4: Simplify right side
   42,145.32x = 1,571,587,685.38
5. Step 5: Solve for x
   x = 1,571,587,685.38/42,145.32
6. Step 6: Final answer
   x = 37,289.73