Finding the Fourth Proportional to 52,219.29, 72,062.72 and 28,345.98

Step by Step Solution

1. Step 1: Write the proportion equation
   52,219.29 : 72,062.72 = 28,345.98 : x
2. Step 2: Convert to fraction form
   52,219.29/72,062.72 = 28,345.98/x
3. Step 3: Cross multiply
   52,219.29x = 72,062.72 × 28,345.98
4. Step 4: Simplify right side
   52,219.29x = 2,042,688,419.87
5. Step 5: Solve for x
   x = 2,042,688,419.87/52,219.29
6. Step 6: Final answer
   x = 39,117.51