Finding the Fourth Proportional to 52,259.91, 72,119.22 and 28,387.05

Step by Step Solution

1. Step 1: Write the proportion equation
   52,259.91 : 72,119.22 = 28,387.05 : x
2. Step 2: Convert to fraction form
   52,259.91/72,119.22 = 28,387.05/x
3. Step 3: Cross multiply
   52,259.91x = 72,119.22 × 28,387.05
4. Step 4: Simplify right side
   52,259.91x = 2,047,251,904.10
5. Step 5: Solve for x
   x = 2,047,251,904.10/52,259.91
6. Step 6: Final answer
   x = 39,174.42