Finding the Fourth Proportional to 81,145.52, 111,980.06 and 45,341.70

Step by Step Solution

1. Step 1: Write the proportion equation
   81,145.52 : 111,980.06 = 45,341.70 : x
2. Step 2: Convert to fraction form
   81,145.52/111,980.06 = 45,341.70/x
3. Step 3: Cross multiply
   81,145.52x = 111,980.06 × 45,341.70
4. Step 4: Simplify right side
   81,145.52x = 5,077,366,286.50
5. Step 5: Solve for x
   x = 5,077,366,286.50/81,145.52
6. Step 6: Final answer
   x = 62,571.12