Finding the Fourth Proportional to 112,464.88, 168,780.38 and 53,300.72

Step by Step Solution

1. Step 1: Write the proportion equation
   112,464.88 : 168,780.38 = 53,300.72 : x
2. Step 2: Convert to fraction form
   112,464.88/168,780.38 = 53,300.72/x
3. Step 3: Cross multiply
   112,464.88x = 168,780.38 × 53,300.72
4. Step 4: Simplify right side
   112,464.88x = 8,996,115,931.32
5. Step 5: Solve for x
   x = 8,996,115,931.32/112,464.88
6. Step 6: Final answer
   x = 79,990.45