Finding the Fourth Proportional to 54,449, 74,906.34 and 52,116.20

Step by Step Solution

1. Step 1: Write the proportion equation
   54,449 : 74,906.34 = 52,116.20 : x
2. Step 2: Convert to fraction form
   54,449/74,906.34 = 52,116.20/x
3. Step 3: Cross multiply
   54,449x = 74,906.34 × 52,116.20
4. Step 4: Simplify right side
   54,449x = 3,903,833,796.71
5. Step 5: Solve for x
   x = 3,903,833,796.71/54,449
6. Step 6: Final answer
   x = 71,697.07