Finding the Fourth Proportional to 78,970.16, 108,978.56 and 43,160.16

Step by Step Solution

1. Step 1: Write the proportion equation
   78,970.16 : 108,978.56 = 43,160.16 : x
2. Step 2: Convert to fraction form
   78,970.16/108,978.56 = 43,160.16/x
3. Step 3: Cross multiply
   78,970.16x = 108,978.56 × 43,160.16
4. Step 4: Simplify right side
   78,970.16x = 4,703,531,978.27
5. Step 5: Solve for x
   x = 4,703,531,978.27/78,970.16
6. Step 6: Final answer
   x = 59,560.88