Finding the Fourth Proportional to 106,787.16, 160,192.89 and 31,911.57

Step by Step Solution

1. Step 1: Write the proportion equation
   106,787.16 : 160,192.89 = 31,911.57 : x
2. Step 2: Convert to fraction form
   106,787.16/160,192.89 = 31,911.57/x
3. Step 3: Cross multiply
   106,787.16x = 160,192.89 × 31,911.57
4. Step 4: Simplify right side
   106,787.16x = 5,112,006,622.74
5. Step 5: Solve for x
   x = 5,112,006,622.74/106,787.16
6. Step 6: Final answer
   x = 47,870.99