Finding the Fourth Proportional to 52,477.32, 72,419.85 and 28,605.18

Step by Step Solution

1. Step 1: Write the proportion equation
   52,477.32 : 72,419.85 = 28,605.18 : x
2. Step 2: Convert to fraction form
   52,477.32/72,419.85 = 28,605.18/x
3. Step 3: Cross multiply
   52,477.32x = 72,419.85 × 28,605.18
4. Step 4: Simplify right side
   52,477.32x = 2,071,582,844.82
5. Step 5: Solve for x
   x = 2,071,582,844.82/52,477.32
6. Step 6: Final answer
   x = 39,475.77