Finding the Fourth Proportional to 52,617.99, 72,613.89 and 28,746.20

Step by Step Solution

1. Step 1: Write the proportion equation
   52,617.99 : 72,613.89 = 28,746.20 : x
2. Step 2: Convert to fraction form
   52,617.99/72,613.89 = 28,746.20/x
3. Step 3: Cross multiply
   52,617.99x = 72,613.89 × 28,746.20
4. Step 4: Simplify right side
   52,617.99x = 2,087,373,041.65
5. Step 5: Solve for x
   x = 2,087,373,041.65/52,617.99
6. Step 6: Final answer
   x = 39,670.33