Finding the Fourth Proportional to 83,899.12, 115,780.72 and 46,173.40

Step by Step Solution

1. Step 1: Write the proportion equation
   83,899.12 : 115,780.72 = 46,173.40 : x
2. Step 2: Convert to fraction form
   83,899.12/115,780.72 = 46,173.40/x
3. Step 3: Cross multiply
   83,899.12x = 115,780.72 × 46,173.40
4. Step 4: Simplify right side
   83,899.12x = 5,345,989,496.85
5. Step 5: Solve for x
   x = 5,345,989,496.85/83,899.12
6. Step 6: Final answer
   x = 63,719.26