Finding the Fourth Proportional to 78,978.33, 118,400.86 and 36,836.21

Step by Step Solution

1. Step 1: Write the proportion equation
   78,978.33 : 118,400.86 = 36,836.21 : x
2. Step 2: Convert to fraction form
   78,978.33/118,400.86 = 36,836.21/x
3. Step 3: Cross multiply
   78,978.33x = 118,400.86 × 36,836.21
4. Step 4: Simplify right side
   78,978.33x = 4,361,438,758.96
5. Step 5: Solve for x
   x = 4,361,438,758.96/78,978.33
6. Step 6: Final answer
   x = 55,223.23