Finding the Fourth Proportional to 78,910.58, 108,868.30 and 46,638.42

Step by Step Solution

1. Step 1: Write the proportion equation
   78,910.58 : 108,868.30 = 46,638.42 : x
2. Step 2: Convert to fraction form
   78,910.58/108,868.30 = 46,638.42/x
3. Step 3: Cross multiply
   78,910.58x = 108,868.30 × 46,638.42
4. Step 4: Simplify right side
   78,910.58x = 5,077,445,383.49
5. Step 5: Solve for x
   x = 5,077,445,383.49/78,910.58
6. Step 6: Final answer
   x = 64,344.30