Finding the Fourth Proportional to 70,873.69, 97,784.78 and 42,170.35

Step by Step Solution

1. Step 1: Write the proportion equation
   70,873.69 : 97,784.78 = 42,170.35 : x
2. Step 2: Convert to fraction form
   70,873.69/97,784.78 = 42,170.35/x
3. Step 3: Cross multiply
   70,873.69x = 97,784.78 × 42,170.35
4. Step 4: Simplify right side
   70,873.69x = 4,123,617,968.89
5. Step 5: Solve for x
   x = 4,123,617,968.89/70,873.69
6. Step 6: Final answer
   x = 58,182.63