Finding the Fourth Proportional to 78,647.63, 108,533.88 and 42,837.53

Step by Step Solution

1. Step 1: Write the proportion equation
   78,647.63 : 108,533.88 = 42,837.53 : x
2. Step 2: Convert to fraction form
   78,647.63/108,533.88 = 42,837.53/x
3. Step 3: Cross multiply
   78,647.63x = 108,533.88 × 42,837.53
4. Step 4: Simplify right side
   78,647.63x = 4,649,322,797.85
5. Step 5: Solve for x
   x = 4,649,322,797.85/78,647.63
6. Step 6: Final answer
   x = 59,115.87