Finding the Fourth Proportional to 56,612.39, 78,126.93 and 31,119.59

Step by Step Solution

1. Step 1: Write the proportion equation
   56,612.39 : 78,126.93 = 31,119.59 : x
2. Step 2: Convert to fraction form
   56,612.39/78,126.93 = 31,119.59/x
3. Step 3: Cross multiply
   56,612.39x = 78,126.93 × 31,119.59
4. Step 4: Simplify right side
   56,612.39x = 2,431,278,224.88
5. Step 5: Solve for x
   x = 2,431,278,224.88/56,612.39
6. Step 6: Final answer
   x = 42,946.05