Finding the Fourth Proportional to 72,701.68, 109,053.60 and 47,900.56

Step by Step Solution

1. Step 1: Write the proportion equation
   72,701.68 : 109,053.60 = 47,900.56 : x
2. Step 2: Convert to fraction form
   72,701.68/109,053.60 = 47,900.56/x
3. Step 3: Cross multiply
   72,701.68x = 109,053.60 × 47,900.56
4. Step 4: Simplify right side
   72,701.68x = 5,223,728,510.02
5. Step 5: Solve for x
   x = 5,223,728,510.02/72,701.68
6. Step 6: Final answer
   x = 71,851.55