Finding the Fourth Proportional to 111,642.71, 154,068.69 and 60,656.45

Step by Step Solution

1. Step 1: Write the proportion equation
   111,642.71 : 154,068.69 = 60,656.45 : x
2. Step 2: Convert to fraction form
   111,642.71/154,068.69 = 60,656.45/x
3. Step 3: Cross multiply
   111,642.71x = 154,068.69 × 60,656.45
4. Step 4: Simplify right side
   111,642.71x = 9,345,259,791.55
5. Step 5: Solve for x
   x = 9,345,259,791.55/111,642.71
6. Step 6: Final answer
   x = 83,706.85