Finding the Fourth Proportional to 56,627.51, 78,146.01 and 31,134.31

Step by Step Solution

1. Step 1: Write the proportion equation
   56,627.51 : 78,146.01 = 31,134.31 : x
2. Step 2: Convert to fraction form
   56,627.51/78,146.01 = 31,134.31/x
3. Step 3: Cross multiply
   56,627.51x = 78,146.01 × 31,134.31
4. Step 4: Simplify right side
   56,627.51x = 2,433,022,198.29
5. Step 5: Solve for x
   x = 2,433,022,198.29/56,627.51
6. Step 6: Final answer
   x = 42,965.38