Finding the Fourth Proportional to 56,390.35, 77,817.82 and 30,896.51

Step by Step Solution

1. Step 1: Write the proportion equation
   56,390.35 : 77,817.82 = 30,896.51 : x
2. Step 2: Convert to fraction form
   56,390.35/77,817.82 = 30,896.51/x
3. Step 3: Cross multiply
   56,390.35x = 77,817.82 × 30,896.51
4. Step 4: Simplify right side
   56,390.35x = 2,404,299,053.81
5. Step 5: Solve for x
   x = 2,404,299,053.81/56,390.35
6. Step 6: Final answer
   x = 42,636.71