Finding the Fourth Proportional to 121,878.17, 182,878.76 and 55,275.82

Step by Step Solution

1. Step 1: Write the proportion equation
   121,878.17 : 182,878.76 = 55,275.82 : x
2. Step 2: Convert to fraction form
   121,878.17/182,878.76 = 55,275.82/x
3. Step 3: Cross multiply
   121,878.17x = 182,878.76 × 55,275.82
4. Step 4: Simplify right side
   121,878.17x = 10,108,773,100.58
5. Step 5: Solve for x
   x = 10,108,773,100.58/121,878.17
6. Step 6: Final answer
   x = 82,941.62