Finding the Fourth Proportional to 56,388.94, 77,816.69 and 30,896.95

Step by Step Solution

1. Step 1: Write the proportion equation
   56,388.94 : 77,816.69 = 30,896.95 : x
2. Step 2: Convert to fraction form
   56,388.94/77,816.69 = 30,896.95/x
3. Step 3: Cross multiply
   56,388.94x = 77,816.69 × 30,896.95
4. Step 4: Simplify right side
   56,388.94x = 2,404,298,380.10
5. Step 5: Solve for x
   x = 2,404,298,380.10/56,388.94
6. Step 6: Final answer
   x = 42,637.77