Finding the Fourth Proportional to 111,665.63, 154,098.57 and 61,364.63

Step by Step Solution

1. Step 1: Write the proportion equation
   111,665.63 : 154,098.57 = 61,364.63 : x
2. Step 2: Convert to fraction form
   111,665.63/154,098.57 = 61,364.63/x
3. Step 3: Cross multiply
   111,665.63x = 154,098.57 × 61,364.63
4. Step 4: Simplify right side
   111,665.63x = 9,456,200,961.09
5. Step 5: Solve for x
   x = 9,456,200,961.09/111,665.63
6. Step 6: Final answer
   x = 84,683.19