Finding the Fourth Proportional to 111,410.62, 153,766.31 and 66,113.58

Step by Step Solution

1. Step 1: Write the proportion equation
   111,410.62 : 153,766.31 = 66,113.58 : x
2. Step 2: Convert to fraction form
   111,410.62/153,766.31 = 66,113.58/x
3. Step 3: Cross multiply
   111,410.62x = 153,766.31 × 66,113.58
4. Step 4: Simplify right side
   111,410.62x = 10,166,041,483.55
5. Step 5: Solve for x
   x = 10,166,041,483.55/111,410.62
6. Step 6: Final answer
   x = 91,248.41