Finding the Fourth Proportional to 55,821, 77,032.98 and 30,670.50

Step by Step Solution

1. Step 1: Write the proportion equation
   55,821 : 77,032.98 = 30,670.50 : x
2. Step 2: Convert to fraction form
   55,821/77,032.98 = 30,670.50/x
3. Step 3: Cross multiply
   55,821x = 77,032.98 × 30,670.50
4. Step 4: Simplify right side
   55,821x = 2,362,640,013.09
5. Step 5: Solve for x
   x = 2,362,640,013.09/55,821
6. Step 6: Final answer
   x = 42,325.29