Finding the Fourth Proportional to 112,499.40, 168,752.16 and 49,287

Step by Step Solution

1. Step 1: Write the proportion equation
   112,499.40 : 168,752.16 = 49,287 : x
2. Step 2: Convert to fraction form
   112,499.40/168,752.16 = 49,287/x
3. Step 3: Cross multiply
   112,499.40x = 168,752.16 × 49,287
4. Step 4: Simplify right side
   112,499.40x = 8,317,287,709.92
5. Step 5: Solve for x
   x = 8,317,287,709.92/112,499.40
6. Step 6: Final answer
   x = 73,931.84