Finding the Fourth Proportional to 70,970.28, 97,966.98 and 42,670.50

Step by Step Solution

1. Step 1: Write the proportion equation
   70,970.28 : 97,966.98 = 42,670.50 : x
2. Step 2: Convert to fraction form
   70,970.28/97,966.98 = 42,670.50/x
3. Step 3: Cross multiply
   70,970.28x = 97,966.98 × 42,670.50
4. Step 4: Simplify right side
   70,970.28x = 4,180,300,020.09
5. Step 5: Solve for x
   x = 4,180,300,020.09/70,970.28
6. Step 6: Final answer
   x = 58,902.12