Finding the Fourth Proportional to 52,643.31, 72,647.96 and 28,769.99

Step by Step Solution

1. Step 1: Write the proportion equation
   52,643.31 : 72,647.96 = 28,769.99 : x
2. Step 2: Convert to fraction form
   52,643.31/72,647.96 = 28,769.99/x
3. Step 3: Cross multiply
   52,643.31x = 72,647.96 × 28,769.99
4. Step 4: Simplify right side
   52,643.31x = 2,090,080,575.63
5. Step 5: Solve for x
   x = 2,090,080,575.63/52,643.31
6. Step 6: Final answer
   x = 39,702.68