Finding the Fourth Proportional to 83,799.72, 115,610.64 and 47,970.42

Step by Step Solution

1. Step 1: Write the proportion equation
   83,799.72 : 115,610.64 = 47,970.42 : x
2. Step 2: Convert to fraction form
   83,799.72/115,610.64 = 47,970.42/x
3. Step 3: Cross multiply
   83,799.72x = 115,610.64 × 47,970.42
4. Step 4: Simplify right side
   83,799.72x = 5,545,890,957.27
5. Step 5: Solve for x
   x = 5,545,890,957.27/83,799.72
6. Step 6: Final answer
   x = 66,180.30