Finding the Fourth Proportional to 46,809.70, 70,105.20 and 45,870.10

Step by Step Solution

1. Step 1: Write the proportion equation
   46,809.70 : 70,105.20 = 45,870.10 : x
2. Step 2: Convert to fraction form
   46,809.70/70,105.20 = 45,870.10/x
3. Step 3: Cross multiply
   46,809.70x = 70,105.20 × 45,870.10
4. Step 4: Simplify right side
   46,809.70x = 3,215,732,534.52
5. Step 5: Solve for x
   x = 3,215,732,534.52/46,809.70
6. Step 6: Final answer
   x = 68,697.99