Finding the Fourth Proportional to 52,641.42, 72,646.12 and 28,769.10

Step by Step Solution

1. Step 1: Write the proportion equation
   52,641.42 : 72,646.12 = 28,769.10 : x
2. Step 2: Convert to fraction form
   52,641.42/72,646.12 = 28,769.10/x
3. Step 3: Cross multiply
   52,641.42x = 72,646.12 × 28,769.10
4. Step 4: Simplify right side
   52,641.42x = 2,089,963,490.89
5. Step 5: Solve for x
   x = 2,089,963,490.89/52,641.42
6. Step 6: Final answer
   x = 39,701.88