Finding the Fourth Proportional to 78,297.98, 108,052 and 42,488.30

Step by Step Solution

1. Step 1: Write the proportion equation
   78,297.98 : 108,052 = 42,488.30 : x
2. Step 2: Convert to fraction form
   78,297.98/108,052 = 42,488.30/x
3. Step 3: Cross multiply
   78,297.98x = 108,052 × 42,488.30
4. Step 4: Simplify right side
   78,297.98x = 4,590,945,791.60
5. Step 5: Solve for x
   x = 4,590,945,791.60/78,297.98
6. Step 6: Final answer
   x = 58,634.28