Finding the Fourth Proportional to 49,210.74, 67,916.91 and 31,087.86

Step by Step Solution

1. Step 1: Write the proportion equation
   49,210.74 : 67,916.91 = 31,087.86 : x
2. Step 2: Convert to fraction form
   49,210.74/67,916.91 = 31,087.86/x
3. Step 3: Cross multiply
   49,210.74x = 67,916.91 × 31,087.86
4. Step 4: Simplify right side
   49,210.74x = 2,111,391,389.71
5. Step 5: Solve for x
   x = 2,111,391,389.71/49,210.74
6. Step 6: Final answer
   x = 42,905.09