Finding the Fourth Proportional to 127,604.34, 191,406.58 and 57,401.64

Step by Step Solution

1. Step 1: Write the proportion equation
   127,604.34 : 191,406.58 = 57,401.64 : x
2. Step 2: Convert to fraction form
   127,604.34/191,406.58 = 57,401.64/x
3. Step 3: Cross multiply
   127,604.34x = 191,406.58 × 57,401.64
4. Step 4: Simplify right side
   127,604.34x = 10,987,051,598.79
5. Step 5: Solve for x
   x = 10,987,051,598.79/127,604.34
6. Step 6: Final answer
   x = 86,102.49