Finding the Fourth Proportional to 52,419.14, 72,339.72 and 28,547.12

Step by Step Solution

1. Step 1: Write the proportion equation
   52,419.14 : 72,339.72 = 28,547.12 : x
2. Step 2: Convert to fraction form
   52,419.14/72,339.72 = 28,547.12/x
3. Step 3: Cross multiply
   52,419.14x = 72,339.72 × 28,547.12
4. Step 4: Simplify right side
   52,419.14x = 2,065,090,667.61
5. Step 5: Solve for x
   x = 2,065,090,667.61/52,419.14
6. Step 6: Final answer
   x = 39,395.74