Finding the Fourth Proportional to 56,245, 77,619.72 and 31,096.12

Step by Step Solution

1. Step 1: Write the proportion equation
   56,245 : 77,619.72 = 31,096.12 : x
2. Step 2: Convert to fraction form
   56,245/77,619.72 = 31,096.12/x
3. Step 3: Cross multiply
   56,245x = 77,619.72 × 31,096.12
4. Step 4: Simplify right side
   56,245x = 2,413,672,127.49
5. Step 5: Solve for x
   x = 2,413,672,127.49/56,245
6. Step 6: Final answer
   x = 42,913.54