Finding the Fourth Proportional to 315,667.65, 473,571.44 and 91,010.55

Step by Step Solution

1. Step 1: Write the proportion equation
   315,667.65 : 473,571.44 = 91,010.55 : x
2. Step 2: Convert to fraction form
   315,667.65/473,571.44 = 91,010.55/x
3. Step 3: Cross multiply
   315,667.65x = 473,571.44 × 91,010.55
4. Step 4: Simplify right side
   315,667.65x = 43,099,998,880.82
5. Step 5: Solve for x
   x = 43,099,998,880.82/315,667.65
6. Step 6: Final answer
   x = 136,536.00