Finding the Fourth Proportional to 56,420.37, 84,547.39 and 31,426.01

Step by Step Solution

1. Step 1: Write the proportion equation
   56,420.37 : 84,547.39 = 31,426.01 : x
2. Step 2: Convert to fraction form
   56,420.37/84,547.39 = 31,426.01/x
3. Step 3: Cross multiply
   56,420.37x = 84,547.39 × 31,426.01
4. Step 4: Simplify right side
   56,420.37x = 2,656,987,123.61
5. Step 5: Solve for x
   x = 2,656,987,123.61/56,420.37
6. Step 6: Final answer
   x = 47,092.69