Finding the Fourth Proportional to 110,142.50, 152,009.61 and 65,430.50

Step by Step Solution

1. Step 1: Write the proportion equation
   110,142.50 : 152,009.61 = 65,430.50 : x
2. Step 2: Convert to fraction form
   110,142.50/152,009.61 = 65,430.50/x
3. Step 3: Cross multiply
   110,142.50x = 152,009.61 × 65,430.50
4. Step 4: Simplify right side
   110,142.50x = 9,946,064,787.11
5. Step 5: Solve for x
   x = 9,946,064,787.11/110,142.50
6. Step 6: Final answer
   x = 90,301.79