Finding the Fourth Proportional to 83,892.60, 115,770.88 and 47,600.72

Step by Step Solution

1. Step 1: Write the proportion equation
   83,892.60 : 115,770.88 = 47,600.72 : x
2. Step 2: Convert to fraction form
   83,892.60/115,770.88 = 47,600.72/x
3. Step 3: Cross multiply
   83,892.60x = 115,770.88 × 47,600.72
4. Step 4: Simplify right side
   83,892.60x = 5,510,777,243.03
5. Step 5: Solve for x
   x = 5,510,777,243.03/83,892.60
6. Step 6: Final answer
   x = 65,688.48