Finding the Fourth Proportional to 78,770.35, 118,162.89 and 31,374.01

Step by Step Solution

1. Step 1: Write the proportion equation
   78,770.35 : 118,162.89 = 31,374.01 : x
2. Step 2: Convert to fraction form
   78,770.35/118,162.89 = 31,374.01/x
3. Step 3: Cross multiply
   78,770.35x = 118,162.89 × 31,374.01
4. Step 4: Simplify right side
   78,770.35x = 3,707,243,692.49
5. Step 5: Solve for x
   x = 3,707,243,692.49/78,770.35
6. Step 6: Final answer
   x = 47,063.95