Finding the Fourth Proportional to 112,066.32, 168,111.77 and 55,920.55

Step by Step Solution

1. Step 1: Write the proportion equation
   112,066.32 : 168,111.77 = 55,920.55 : x
2. Step 2: Convert to fraction form
   112,066.32/168,111.77 = 55,920.55/x
3. Step 3: Cross multiply
   112,066.32x = 168,111.77 × 55,920.55
4. Step 4: Simplify right side
   112,066.32x = 9,400,902,639.87
5. Step 5: Solve for x
   x = 9,400,902,639.87/112,066.32
6. Step 6: Final answer
   x = 83,886.96