Finding the Fourth Proportional to 111,985.42, 154,539.89 and 61,684.42

Step by Step Solution

1. Step 1: Write the proportion equation
   111,985.42 : 154,539.89 = 61,684.42 : x
2. Step 2: Convert to fraction form
   111,985.42/154,539.89 = 61,684.42/x
3. Step 3: Cross multiply
   111,985.42x = 154,539.89 × 61,684.42
4. Step 4: Simplify right side
   111,985.42x = 9,532,703,481.51
5. Step 5: Solve for x
   x = 9,532,703,481.51/111,985.42
6. Step 6: Final answer
   x = 85,124.51