Finding the Fourth Proportional to 83,705.12, 115,518.72 and 45,979.76

Step by Step Solution

1. Step 1: Write the proportion equation
   83,705.12 : 115,518.72 = 45,979.76 : x
2. Step 2: Convert to fraction form
   83,705.12/115,518.72 = 45,979.76/x
3. Step 3: Cross multiply
   83,705.12x = 115,518.72 × 45,979.76
4. Step 4: Simplify right side
   83,705.12x = 5,311,523,021.11
5. Step 5: Solve for x
   x = 5,311,523,021.11/83,705.12
6. Step 6: Final answer
   x = 63,455.17