Finding the Fourth Proportional to 111,688.72, 154,131.62 and 60,701.45

Step by Step Solution

1. Step 1: Write the proportion equation
   111,688.72 : 154,131.62 = 60,701.45 : x
2. Step 2: Convert to fraction form
   111,688.72/154,131.62 = 60,701.45/x
3. Step 3: Cross multiply
   111,688.72x = 154,131.62 × 60,701.45
4. Step 4: Simplify right side
   111,688.72x = 9,356,012,521.34
5. Step 5: Solve for x
   x = 9,356,012,521.34/111,688.72
6. Step 6: Final answer
   x = 83,768.65