Finding the Fourth Proportional to 52,406.54, 72,345.40 and 30,889.50

Step by Step Solution

1. Step 1: Write the proportion equation
   52,406.54 : 72,345.40 = 30,889.50 : x
2. Step 2: Convert to fraction form
   52,406.54/72,345.40 = 30,889.50/x
3. Step 3: Cross multiply
   52,406.54x = 72,345.40 × 30,889.50
4. Step 4: Simplify right side
   52,406.54x = 2,234,713,233.30
5. Step 5: Solve for x
   x = 2,234,713,233.30/52,406.54
6. Step 6: Final answer
   x = 42,641.88