Finding the Fourth Proportional to 56,599.96, 78,109.44 and 31,107.05

Step by Step Solution

1. Step 1: Write the proportion equation
   56,599.96 : 78,109.44 = 31,107.05 : x
2. Step 2: Convert to fraction form
   56,599.96/78,109.44 = 31,107.05/x
3. Step 3: Cross multiply
   56,599.96x = 78,109.44 × 31,107.05
4. Step 4: Simplify right side
   56,599.96x = 2,429,754,255.55
5. Step 5: Solve for x
   x = 2,429,754,255.55/56,599.96
6. Step 6: Final answer
   x = 42,928.55