Finding the Fourth Proportional to 112,911.98, 155,774.06 and 65,156.09

Step by Step Solution

1. Step 1: Write the proportion equation
   112,911.98 : 155,774.06 = 65,156.09 : x
2. Step 2: Convert to fraction form
   112,911.98/155,774.06 = 65,156.09/x
3. Step 3: Cross multiply
   112,911.98x = 155,774.06 × 65,156.09
4. Step 4: Simplify right side
   112,911.98x = 10,149,627,568.37
5. Step 5: Solve for x
   x = 10,149,627,568.37/112,911.98
6. Step 6: Final answer
   x = 89,889.74