Finding the Fourth Proportional to 78,806.81, 108,753.75 and 42,997.57

Step by Step Solution

1. Step 1: Write the proportion equation
   78,806.81 : 108,753.75 = 42,997.57 : x
2. Step 2: Convert to fraction form
   78,806.81/108,753.75 = 42,997.57/x
3. Step 3: Cross multiply
   78,806.81x = 108,753.75 × 42,997.57
4. Step 4: Simplify right side
   78,806.81x = 4,676,146,978.39
5. Step 5: Solve for x
   x = 4,676,146,978.39/78,806.81
6. Step 6: Final answer
   x = 59,336.84