Finding the Fourth Proportional to 52,899, 72,472.44 and 50,906.40

Step by Step Solution

1. Step 1: Write the proportion equation
   52,899 : 72,472.44 = 50,906.40 : x
2. Step 2: Convert to fraction form
   52,899/72,472.44 = 50,906.40/x
3. Step 3: Cross multiply
   52,899x = 72,472.44 × 50,906.40
4. Step 4: Simplify right side
   52,899x = 3,689,311,019.62
5. Step 5: Solve for x
   x = 3,689,311,019.62/52,899
6. Step 6: Final answer
   x = 69,742.55