Finding the Fourth Proportional to 112,856.96, 155,711.76 and 70,422.32

Step by Step Solution

1. Step 1: Write the proportion equation
   112,856.96 : 155,711.76 = 70,422.32 : x
2. Step 2: Convert to fraction form
   112,856.96/155,711.76 = 70,422.32/x
3. Step 3: Cross multiply
   112,856.96x = 155,711.76 × 70,422.32
4. Step 4: Simplify right side
   112,856.96x = 10,965,583,390.48
5. Step 5: Solve for x
   x = 10,965,583,390.48/112,856.96
6. Step 6: Final answer
   x = 97,163.55