Finding the Fourth Proportional to 56,087, 77,400.06 and 30,938.12

Step by Step Solution

1. Step 1: Write the proportion equation
   56,087 : 77,400.06 = 30,938.12 : x
2. Step 2: Convert to fraction form
   56,087/77,400.06 = 30,938.12/x
3. Step 3: Cross multiply
   56,087x = 77,400.06 × 30,938.12
4. Step 4: Simplify right side
   56,087x = 2,394,612,344.29
5. Step 5: Solve for x
   x = 2,394,612,344.29/56,087
6. Step 6: Final answer
   x = 42,694.61