Finding the Fourth Proportional to 50,072.90, 69,100.66 and 31,210

Step by Step Solution

1. Step 1: Write the proportion equation
   50,072.90 : 69,100.66 = 31,210 : x
2. Step 2: Convert to fraction form
   50,072.90/69,100.66 = 31,210/x
3. Step 3: Cross multiply
   50,072.90x = 69,100.66 × 31,210
4. Step 4: Simplify right side
   50,072.90x = 2,156,631,598.60
5. Step 5: Solve for x
   x = 2,156,631,598.60/50,072.90
6. Step 6: Final answer
   x = 43,069.84