Finding the Fourth Proportional to 78,308, 108,154.74 and 51,570.02

Step by Step Solution

1. Step 1: Write the proportion equation
   78,308 : 108,154.74 = 51,570.02 : x
2. Step 2: Convert to fraction form
   78,308/108,154.74 = 51,570.02/x
3. Step 3: Cross multiply
   78,308x = 108,154.74 × 51,570.02
4. Step 4: Simplify right side
   78,308x = 5,577,542,104.89
5. Step 5: Solve for x
   x = 5,577,542,104.89/78,308
6. Step 6: Final answer
   x = 71,225.70