Finding the Fourth Proportional to 56,245.19, 77,619.98 and 31,096.31

Step by Step Solution

1. Step 1: Write the proportion equation
   56,245.19 : 77,619.98 = 31,096.31 : x
2. Step 2: Convert to fraction form
   56,245.19/77,619.98 = 31,096.31/x
3. Step 3: Cross multiply
   56,245.19x = 77,619.98 × 31,096.31
4. Step 4: Simplify right side
   56,245.19x = 2,413,694,960.27
5. Step 5: Solve for x
   x = 2,413,694,960.27/56,245.19
6. Step 6: Final answer
   x = 42,913.80