Finding the Fourth Proportional to 56,237, 77,608.68 and 31,088.12

Step by Step Solution

1. Step 1: Write the proportion equation
   56,237 : 77,608.68 = 31,088.12 : x
2. Step 2: Convert to fraction form
   56,237/77,608.68 = 31,088.12/x
3. Step 3: Cross multiply
   56,237x = 77,608.68 × 31,088.12
4. Step 4: Simplify right side
   56,237x = 2,412,707,956.88
5. Step 5: Solve for x
   x = 2,412,707,956.88/56,237
6. Step 6: Final answer
   x = 42,902.50