Finding the Fourth Proportional to 56,599.93, 78,104.10 and 31,105.74

Step by Step Solution

1. Step 1: Write the proportion equation
   56,599.93 : 78,104.10 = 31,105.74 : x
2. Step 2: Convert to fraction form
   56,599.93/78,104.10 = 31,105.74/x
3. Step 3: Cross multiply
   56,599.93x = 78,104.10 × 31,105.74
4. Step 4: Simplify right side
   56,599.93x = 2,429,485,827.53
5. Step 5: Solve for x
   x = 2,429,485,827.53/56,599.93
6. Step 6: Final answer
   x = 42,923.83