Finding the Fourth Proportional to 70,405, 97,134.98 and 40,168.60

Step by Step Solution

1. Step 1: Write the proportion equation
   70,405 : 97,134.98 = 40,168.60 : x
2. Step 2: Convert to fraction form
   70,405/97,134.98 = 40,168.60/x
3. Step 3: Cross multiply
   70,405x = 97,134.98 × 40,168.60
4. Step 4: Simplify right side
   70,405x = 3,901,776,157.63
5. Step 5: Solve for x
   x = 3,901,776,157.63/70,405
6. Step 6: Final answer
   x = 55,419.02