Finding the Fourth Proportional to 112,320.32, 168,397.25 and 53,086.77

Step by Step Solution

1. Step 1: Write the proportion equation
   112,320.32 : 168,397.25 = 53,086.77 : x
2. Step 2: Convert to fraction form
   112,320.32/168,397.25 = 53,086.77/x
3. Step 3: Cross multiply
   112,320.32x = 168,397.25 × 53,086.77
4. Step 4: Simplify right side
   112,320.32x = 8,939,665,813.95
5. Step 5: Solve for x
   x = 8,939,665,813.95/112,320.32
6. Step 6: Final answer
   x = 79,590.82