Finding the Fourth Proportional to 112,505.36, 168,758.21 and 45,945.50

Step by Step Solution

1. Step 1: Write the proportion equation
   112,505.36 : 168,758.21 = 45,945.50 : x
2. Step 2: Convert to fraction form
   112,505.36/168,758.21 = 45,945.50/x
3. Step 3: Cross multiply
   112,505.36x = 168,758.21 × 45,945.50
4. Step 4: Simplify right side
   112,505.36x = 7,753,679,264.04
5. Step 5: Solve for x
   x = 7,753,679,264.04/112,505.36
6. Step 6: Final answer
   x = 68,918.31