Finding the Fourth Proportional to 83,422.16, 115,124.80 and 47,120.72

Step by Step Solution

1. Step 1: Write the proportion equation
   83,422.16 : 115,124.80 = 47,120.72 : x
2. Step 2: Convert to fraction form
   83,422.16/115,124.80 = 47,120.72/x
3. Step 3: Cross multiply
   83,422.16x = 115,124.80 × 47,120.72
4. Step 4: Simplify right side
   83,422.16x = 5,424,763,465.86
5. Step 5: Solve for x
   x = 5,424,763,465.86/83,422.16
6. Step 6: Final answer
   x = 65,027.85