Finding the Fourth Proportional to 52,667.65, 78,807.34 and 31,620.48

Step by Step Solution

1. Step 1: Write the proportion equation
   52,667.65 : 78,807.34 = 31,620.48 : x
2. Step 2: Convert to fraction form
   52,667.65/78,807.34 = 31,620.48/x
3. Step 3: Cross multiply
   52,667.65x = 78,807.34 × 31,620.48
4. Step 4: Simplify right side
   52,667.65x = 2,491,925,918.32
5. Step 5: Solve for x
   x = 2,491,925,918.32/52,667.65
6. Step 6: Final answer
   x = 47,314.17