Finding the Fourth Proportional to 81,787.32, 112,868.32 and 49,973.76

Step by Step Solution

1. Step 1: Write the proportion equation
   81,787.32 : 112,868.32 = 49,973.76 : x
2. Step 2: Convert to fraction form
   81,787.32/112,868.32 = 49,973.76/x
3. Step 3: Cross multiply
   81,787.32x = 112,868.32 × 49,973.76
4. Step 4: Simplify right side
   81,787.32x = 5,640,453,521.07
5. Step 5: Solve for x
   x = 5,640,453,521.07/81,787.32
6. Step 6: Final answer
   x = 68,964.89