Finding the Fourth Proportional to 106,749.56, 160,118.87 and 31,870.32

Step by Step Solution

1. Step 1: Write the proportion equation
   106,749.56 : 160,118.87 = 31,870.32 : x
2. Step 2: Convert to fraction form
   106,749.56/160,118.87 = 31,870.32/x
3. Step 3: Cross multiply
   106,749.56x = 160,118.87 × 31,870.32
4. Step 4: Simplify right side
   106,749.56x = 5,103,039,465.59
5. Step 5: Solve for x
   x = 5,103,039,465.59/106,749.56
6. Step 6: Final answer
   x = 47,803.85