Finding the Fourth Proportional to 56,155.12, 77,494.23 and 30,661.71

Step by Step Solution

1. Step 1: Write the proportion equation
   56,155.12 : 77,494.23 = 30,661.71 : x
2. Step 2: Convert to fraction form
   56,155.12/77,494.23 = 30,661.71/x
3. Step 3: Cross multiply
   56,155.12x = 77,494.23 × 30,661.71
4. Step 4: Simplify right side
   56,155.12x = 2,376,105,316.33
5. Step 5: Solve for x
   x = 2,376,105,316.33/56,155.12
6. Step 6: Final answer
   x = 42,313.25