Finding the Fourth Proportional to 109,997.50, 151,835.91 and 65,285.50

Step by Step Solution

1. Step 1: Write the proportion equation
   109,997.50 : 151,835.91 = 65,285.50 : x
2. Step 2: Convert to fraction form
   109,997.50/151,835.91 = 65,285.50/x
3. Step 3: Cross multiply
   109,997.50x = 151,835.91 × 65,285.50
4. Step 4: Simplify right side
   109,997.50x = 9,912,683,302.31
5. Step 5: Solve for x
   x = 9,912,683,302.31/109,997.50
6. Step 6: Final answer
   x = 90,117.35