Finding the Fourth Proportional to 54,311, 74,946.72 and 30,437.48

Step by Step Solution

1. Step 1: Write the proportion equation
   54,311 : 74,946.72 = 30,437.48 : x
2. Step 2: Convert to fraction form
   54,311/74,946.72 = 30,437.48/x
3. Step 3: Cross multiply
   54,311x = 74,946.72 × 30,437.48
4. Step 4: Simplify right side
   54,311x = 2,281,189,291.07
5. Step 5: Solve for x
   x = 2,281,189,291.07/54,311
6. Step 6: Final answer
   x = 42,002.34