Finding the Fourth Proportional to 72,657, 108,956.34 and 35,186.40

Step by Step Solution

1. Step 1: Write the proportion equation
   72,657 : 108,956.34 = 35,186.40 : x
2. Step 2: Convert to fraction form
   72,657/108,956.34 = 35,186.40/x
3. Step 3: Cross multiply
   72,657x = 108,956.34 × 35,186.40
4. Step 4: Simplify right side
   72,657x = 3,833,781,361.78
5. Step 5: Solve for x
   x = 3,833,781,361.78/72,657
6. Step 6: Final answer
   x = 52,765.48