Finding the Fourth Proportional to 52,345.98, 72,210.69 and 30,820.50

Step by Step Solution

1. Step 1: Write the proportion equation
   52,345.98 : 72,210.69 = 30,820.50 : x
2. Step 2: Convert to fraction form
   52,345.98/72,210.69 = 30,820.50/x
3. Step 3: Cross multiply
   52,345.98x = 72,210.69 × 30,820.50
4. Step 4: Simplify right side
   52,345.98x = 2,225,569,571.15
5. Step 5: Solve for x
   x = 2,225,569,571.15/52,345.98
6. Step 6: Final answer
   x = 42,516.53