Finding the Fourth Proportional to 112,911.50, 155,817.63 and 65,164.85

Step by Step Solution

1. Step 1: Write the proportion equation
   112,911.50 : 155,817.63 = 65,164.85 : x
2. Step 2: Convert to fraction form
   112,911.50/155,817.63 = 65,164.85/x
3. Step 3: Cross multiply
   112,911.50x = 155,817.63 × 65,164.85
4. Step 4: Simplify right side
   112,911.50x = 10,153,832,486.31
5. Step 5: Solve for x
   x = 10,153,832,486.31/112,911.50
6. Step 6: Final answer
   x = 89,927.35