Finding the Fourth Proportional to 111,667.39, 154,106.90 and 63,278.70

Step by Step Solution

1. Step 1: Write the proportion equation
   111,667.39 : 154,106.90 = 63,278.70 : x
2. Step 2: Convert to fraction form
   111,667.39/154,106.90 = 63,278.70/x
3. Step 3: Cross multiply
   111,667.39x = 154,106.90 × 63,278.70
4. Step 4: Simplify right side
   111,667.39x = 9,751,683,522.50
5. Step 5: Solve for x
   x = 9,751,683,522.50/111,667.39
6. Step 6: Final answer
   x = 87,327.95