Finding the Fourth Proportional to 316,304.47, 474,481.05 and 91,667.98

Step by Step Solution

1. Step 1: Write the proportion equation
   316,304.47 : 474,481.05 = 91,667.98 : x
2. Step 2: Convert to fraction form
   316,304.47/474,481.05 = 91,667.98/x
3. Step 3: Cross multiply
   316,304.47x = 474,481.05 × 91,667.98
4. Step 4: Simplify right side
   316,304.47x = 43,494,719,401.78
5. Step 5: Solve for x
   x = 43,494,719,401.78/316,304.47
6. Step 6: Final answer
   x = 137,509.03