Finding the Fourth Proportional to 121,878.77, 182,818.71 and 31,921.29

Step by Step Solution

1. Step 1: Write the proportion equation
   121,878.77 : 182,818.71 = 31,921.29 : x
2. Step 2: Convert to fraction form
   121,878.77/182,818.71 = 31,921.29/x
3. Step 3: Cross multiply
   121,878.77x = 182,818.71 × 31,921.29
4. Step 4: Simplify right side
   121,878.77x = 5,835,809,059.34
5. Step 5: Solve for x
   x = 5,835,809,059.34/121,878.77
6. Step 6: Final answer
   x = 47,882.08