Finding the Fourth Proportional to 56,607.39, 78,106.28 and 31,456.35

Step by Step Solution

1. Step 1: Write the proportion equation
   56,607.39 : 78,106.28 = 31,456.35 : x
2. Step 2: Convert to fraction form
   56,607.39/78,106.28 = 31,456.35/x
3. Step 3: Cross multiply
   56,607.39x = 78,106.28 × 31,456.35
4. Step 4: Simplify right side
   56,607.39x = 2,456,938,323.60
5. Step 5: Solve for x
   x = 2,456,938,323.60/56,607.39
6. Step 6: Final answer
   x = 43,403.14