Finding the Fourth Proportional to 111,411.34, 153,767.29 and 66,114.30

Step by Step Solution

1. Step 1: Write the proportion equation
   111,411.34 : 153,767.29 = 66,114.30 : x
2. Step 2: Convert to fraction form
   111,411.34/153,767.29 = 66,114.30/x
3. Step 3: Cross multiply
   111,411.34x = 153,767.29 × 66,114.30
4. Step 4: Simplify right side
   111,411.34x = 10,166,216,741.25
5. Step 5: Solve for x
   x = 10,166,216,741.25/111,411.34
6. Step 6: Final answer
   x = 91,249.39