Finding the Fourth Proportional to 52,268, 72,139.56 and 29,912

Step by Step Solution

1. Step 1: Write the proportion equation
   52,268 : 72,139.56 = 29,912 : x
2. Step 2: Convert to fraction form
   52,268/72,139.56 = 29,912/x
3. Step 3: Cross multiply
   52,268x = 72,139.56 × 29,912
4. Step 4: Simplify right side
   52,268x = 2,157,838,518.72
5. Step 5: Solve for x
   x = 2,157,838,518.72/52,268
6. Step 6: Final answer
   x = 41,284.12