Finding the Fourth Proportional to 83,580.32, 115,340.82 and 47,280.98

Step by Step Solution

1. Step 1: Write the proportion equation
   83,580.32 : 115,340.82 = 47,280.98 : x
2. Step 2: Convert to fraction form
   83,580.32/115,340.82 = 47,280.98/x
3. Step 3: Cross multiply
   83,580.32x = 115,340.82 × 47,280.98
4. Step 4: Simplify right side
   83,580.32x = 5,453,426,426.90
5. Step 5: Solve for x
   x = 5,453,426,426.90/83,580.32
6. Step 6: Final answer
   x = 65,247.74