Finding the Fourth Proportional to 52,279.94, 72,146.17 and 28,406.70

Step by Step Solution

1. Step 1: Write the proportion equation
   52,279.94 : 72,146.17 = 28,406.70 : x
2. Step 2: Convert to fraction form
   52,279.94/72,146.17 = 28,406.70/x
3. Step 3: Cross multiply
   52,279.94x = 72,146.17 × 28,406.70
4. Step 4: Simplify right side
   52,279.94x = 2,049,434,607.34
5. Step 5: Solve for x
   x = 2,049,434,607.34/52,279.94
6. Step 6: Final answer
   x = 39,201.17