Finding the Fourth Proportional to 56,164.71, 77,507.46 and 30,671.31

Step by Step Solution

1. Step 1: Write the proportion equation
   56,164.71 : 77,507.46 = 30,671.31 : x
2. Step 2: Convert to fraction form
   56,164.71/77,507.46 = 30,671.31/x
3. Step 3: Cross multiply
   56,164.71x = 77,507.46 × 30,671.31
4. Step 4: Simplify right side
   56,164.71x = 2,377,255,332.97
5. Step 5: Solve for x
   x = 2,377,255,332.97/56,164.71
6. Step 6: Final answer
   x = 42,326.50