Finding the Fourth Proportional to 80,870.32, 121,318.38 and 34,130.08

Step by Step Solution

1. Step 1: Write the proportion equation
   80,870.32 : 121,318.38 = 34,130.08 : x
2. Step 2: Convert to fraction form
   80,870.32/121,318.38 = 34,130.08/x
3. Step 3: Cross multiply
   80,870.32x = 121,318.38 × 34,130.08
4. Step 4: Simplify right side
   80,870.32x = 4,140,606,014.87
5. Step 5: Solve for x
   x = 4,140,606,014.87/80,870.32
6. Step 6: Final answer
   x = 51,200.56