Finding the Fourth Proportional to 112,859.96, 155,715.90 and 70,425.32

Step by Step Solution

1. Step 1: Write the proportion equation
   112,859.96 : 155,715.90 = 70,425.32 : x
2. Step 2: Convert to fraction form
   112,859.96/155,715.90 = 70,425.32/x
3. Step 3: Cross multiply
   112,859.96x = 155,715.90 × 70,425.32
4. Step 4: Simplify right side
   112,859.96x = 10,966,342,086.59
5. Step 5: Solve for x
   x = 10,966,342,086.59/112,859.96
6. Step 6: Final answer
   x = 97,167.69