Finding the Fourth Proportional to 70,906.10, 97,843.89 and 40,685.30

Step by Step Solution

1. Step 1: Write the proportion equation
   70,906.10 : 97,843.89 = 40,685.30 : x
2. Step 2: Convert to fraction form
   70,906.10/97,843.89 = 40,685.30/x
3. Step 3: Cross multiply
   70,906.10x = 97,843.89 × 40,685.30
4. Step 4: Simplify right side
   70,906.10x = 3,980,808,017.82
5. Step 5: Solve for x
   x = 3,980,808,017.82/70,906.10
6. Step 6: Final answer
   x = 56,141.97