Finding the Fourth Proportional to 465,815.40, 698,870.72 and 166,289.34

Step by Step Solution

1. Step 1: Write the proportion equation
   465,815.40 : 698,870.72 = 166,289.34 : x
2. Step 2: Convert to fraction form
   465,815.40/698,870.72 = 166,289.34/x
3. Step 3: Cross multiply
   465,815.40x = 698,870.72 × 166,289.34
4. Step 4: Simplify right side
   465,815.40x = 116,214,753,810.61
5. Step 5: Solve for x
   x = 116,214,753,810.61/465,815.40
6. Step 6: Final answer
   x = 249,486.72