Finding the Fourth Proportional to 78,647.35, 108,533.51 and 42,837.25

Step by Step Solution

1. Step 1: Write the proportion equation
   78,647.35 : 108,533.51 = 42,837.25 : x
2. Step 2: Convert to fraction form
   78,647.35/108,533.51 = 42,837.25/x
3. Step 3: Cross multiply
   78,647.35x = 108,533.51 × 42,837.25
4. Step 4: Simplify right side
   78,647.35x = 4,649,277,101.25
5. Step 5: Solve for x
   x = 4,649,277,101.25/78,647.35
6. Step 6: Final answer
   x = 59,115.50