Finding the Fourth Proportional to 460,615.50, 690,947.99 and 145,097.10

Step by Step Solution

1. Step 1: Write the proportion equation
   460,615.50 : 690,947.99 = 145,097.10 : x
2. Step 2: Convert to fraction form
   460,615.50/690,947.99 = 145,097.10/x
3. Step 3: Cross multiply
   460,615.50x = 690,947.99 × 145,097.10
4. Step 4: Simplify right side
   460,615.50x = 100,254,546,507.83
5. Step 5: Solve for x
   x = 100,254,546,507.83/460,615.50
6. Step 6: Final answer
   x = 217,653.44