Finding the Fourth Proportional to 112,213.89, 154,911.29 and 69,786.09

Step by Step Solution

1. Step 1: Write the proportion equation
   112,213.89 : 154,911.29 = 69,786.09 : x
2. Step 2: Convert to fraction form
   112,213.89/154,911.29 = 69,786.09/x
3. Step 3: Cross multiply
   112,213.89x = 154,911.29 × 69,786.09
4. Step 4: Simplify right side
   112,213.89x = 10,810,652,877.03
5. Step 5: Solve for x
   x = 10,810,652,877.03/112,213.89
6. Step 6: Final answer
   x = 96,339.70