Finding the Fourth Proportional to 140,436.84, 210,611.42 and 46,920.72

Step by Step Solution

1. Step 1: Write the proportion equation
   140,436.84 : 210,611.42 = 46,920.72 : x
2. Step 2: Convert to fraction form
   140,436.84/210,611.42 = 46,920.72/x
3. Step 3: Cross multiply
   140,436.84x = 210,611.42 × 46,920.72
4. Step 4: Simplify right side
   140,436.84x = 9,882,039,466.62
5. Step 5: Solve for x
   x = 9,882,039,466.62/140,436.84
6. Step 6: Final answer
   x = 70,366.43