Finding the Fourth Proportional to 312,283, 468,437.46 and 90,667

Step by Step Solution

1. Step 1: Write the proportion equation
   312,283 : 468,437.46 = 90,667 : x
2. Step 2: Convert to fraction form
   312,283/468,437.46 = 90,667/x
3. Step 3: Cross multiply
   312,283x = 468,437.46 × 90,667
4. Step 4: Simplify right side
   312,283x = 42,471,819,185.82
5. Step 5: Solve for x
   x = 42,471,819,185.82/312,283
6. Step 6: Final answer
   x = 136,004.26