Finding the Fourth Proportional to 48,734.79, 67,256.10 and 28,607.10

Step by Step Solution

1. Step 1: Write the proportion equation
   48,734.79 : 67,256.10 = 28,607.10 : x
2. Step 2: Convert to fraction form
   48,734.79/67,256.10 = 28,607.10/x
3. Step 3: Cross multiply
   48,734.79x = 67,256.10 × 28,607.10
4. Step 4: Simplify right side
   48,734.79x = 1,924,001,978.31
5. Step 5: Solve for x
   x = 1,924,001,978.31/48,734.79
6. Step 6: Final answer
   x = 39,479.02