Finding the Fourth Proportional to 309,700.71, 464,507.33 and 99,311.31

Step by Step Solution

1. Step 1: Write the proportion equation
   309,700.71 : 464,507.33 = 99,311.31 : x
2. Step 2: Convert to fraction form
   309,700.71/464,507.33 = 99,311.31/x
3. Step 3: Cross multiply
   309,700.71x = 464,507.33 × 99,311.31
4. Step 4: Simplify right side
   309,700.71x = 46,130,830,950.35
5. Step 5: Solve for x
   x = 46,130,830,950.35/309,700.71
6. Step 6: Final answer
   x = 148,952.94