Finding the Fourth Proportional to 42,128.64, 58,129.92 and 27,216

Step by Step Solution

1. Step 1: Write the proportion equation
   42,128.64 : 58,129.92 = 27,216 : x
2. Step 2: Convert to fraction form
   42,128.64/58,129.92 = 27,216/x
3. Step 3: Cross multiply
   42,128.64x = 58,129.92 × 27,216
4. Step 4: Simplify right side
   42,128.64x = 1,582,063,902.72
5. Step 5: Solve for x
   x = 1,582,063,902.72/42,128.64
6. Step 6: Final answer
   x = 37,553.17