Finding the Fourth Proportional to 55,823, 77,035.74 and 30,672.50

Step by Step Solution

1. Step 1: Write the proportion equation
   55,823 : 77,035.74 = 30,672.50 : x
2. Step 2: Convert to fraction form
   55,823/77,035.74 = 30,672.50/x
3. Step 3: Cross multiply
   55,823x = 77,035.74 × 30,672.50
4. Step 4: Simplify right side
   55,823x = 2,362,878,735.15
5. Step 5: Solve for x
   x = 2,362,878,735.15/55,823
6. Step 6: Final answer
   x = 42,328.05