Finding the Fourth Proportional to 52,213.42, 72,054.60 and 28,340.10

Step by Step Solution

1. Step 1: Write the proportion equation
   52,213.42 : 72,054.60 = 28,340.10 : x
2. Step 2: Convert to fraction form
   52,213.42/72,054.60 = 28,340.10/x
3. Step 3: Cross multiply
   52,213.42x = 72,054.60 × 28,340.10
4. Step 4: Simplify right side
   52,213.42x = 2,042,034,569.46
5. Step 5: Solve for x
   x = 2,042,034,569.46/52,213.42
6. Step 6: Final answer
   x = 39,109.38