Finding the Fourth Proportional to 52,858.34, 72,945.52 and 28,983.60

Step by Step Solution

1. Step 1: Write the proportion equation
   52,858.34 : 72,945.52 = 28,983.60 : x
2. Step 2: Convert to fraction form
   52,858.34/72,945.52 = 28,983.60/x
3. Step 3: Cross multiply
   52,858.34x = 72,945.52 × 28,983.60
4. Step 4: Simplify right side
   52,858.34x = 2,114,223,773.47
5. Step 5: Solve for x
   x = 2,114,223,773.47/52,858.34
6. Step 6: Final answer
   x = 39,997.92