Finding the Fourth Proportional to 314,930.18, 472,476.71 and 90,307.05

Step by Step Solution

1. Step 1: Write the proportion equation
   314,930.18 : 472,476.71 = 90,307.05 : x
2. Step 2: Convert to fraction form
   314,930.18/472,476.71 = 90,307.05/x
3. Step 3: Cross multiply
   314,930.18x = 472,476.71 × 90,307.05
4. Step 4: Simplify right side
   314,930.18x = 42,667,977,422.27
5. Step 5: Solve for x
   x = 42,667,977,422.27/314,930.18
6. Step 6: Final answer
   x = 135,483.93