Finding the Fourth Proportional to 56,296.09, 77,685.10 and 31,145.59

Step by Step Solution

1. Step 1: Write the proportion equation
   56,296.09 : 77,685.10 = 31,145.59 : x
2. Step 2: Convert to fraction form
   56,296.09/77,685.10 = 31,145.59/x
3. Step 3: Cross multiply
   56,296.09x = 77,685.10 × 31,145.59
4. Step 4: Simplify right side
   56,296.09x = 2,419,548,273.71
5. Step 5: Solve for x
   x = 2,419,548,273.71/56,296.09
6. Step 6: Final answer
   x = 42,978.98