Finding the Fourth Proportional to 153,090.72, 229,422.24 and 74,184

Step by Step Solution

1. Step 1: Write the proportion equation
   153,090.72 : 229,422.24 = 74,184 : x
2. Step 2: Convert to fraction form
   153,090.72/229,422.24 = 74,184/x
3. Step 3: Cross multiply
   153,090.72x = 229,422.24 × 74,184
4. Step 4: Simplify right side
   153,090.72x = 17,019,459,452.16
5. Step 5: Solve for x
   x = 17,019,459,452.16/153,090.72
6. Step 6: Final answer
   x = 111,172.38