Finding the Fourth Proportional to 83,619, 115,408.80 and 47,810.52

Step by Step Solution

1. Step 1: Write the proportion equation
   83,619 : 115,408.80 = 47,810.52 : x
2. Step 2: Convert to fraction form
   83,619/115,408.80 = 47,810.52/x
3. Step 3: Cross multiply
   83,619x = 115,408.80 × 47,810.52
4. Step 4: Simplify right side
   83,619x = 5,517,754,740.58
5. Step 5: Solve for x
   x = 5,517,754,740.58/83,619
6. Step 6: Final answer
   x = 65,986.85