Finding the Fourth Proportional to 111,766.36, 154,210.50 and 70,915.57

Step by Step Solution

1. Step 1: Write the proportion equation
   111,766.36 : 154,210.50 = 70,915.57 : x
2. Step 2: Convert to fraction form
   111,766.36/154,210.50 = 70,915.57/x
3. Step 3: Cross multiply
   111,766.36x = 154,210.50 × 70,915.57
4. Step 4: Simplify right side
   111,766.36x = 10,935,925,507.49
5. Step 5: Solve for x
   x = 10,935,925,507.49/111,766.36
6. Step 6: Final answer
   x = 97,846.31