Finding the Fourth Proportional to 70,885.30, 97,778.46 and 42,185.72

Step by Step Solution

1. Step 1: Write the proportion equation
   70,885.30 : 97,778.46 = 42,185.72 : x
2. Step 2: Convert to fraction form
   70,885.30/97,778.46 = 42,185.72/x
3. Step 3: Cross multiply
   70,885.30x = 97,778.46 × 42,185.72
4. Step 4: Simplify right side
   70,885.30x = 4,124,854,735.59
5. Step 5: Solve for x
   x = 4,124,854,735.59/70,885.30
6. Step 6: Final answer
   x = 58,190.55