Finding the Fourth Proportional to 56,781, 78,357.78 and 31,632.12

Step by Step Solution

1. Step 1: Write the proportion equation
   56,781 : 78,357.78 = 31,632.12 : x
2. Step 2: Convert to fraction form
   56,781/78,357.78 = 31,632.12/x
3. Step 3: Cross multiply
   56,781x = 78,357.78 × 31,632.12
4. Step 4: Simplify right side
   56,781x = 2,478,622,699.89
5. Step 5: Solve for x
   x = 2,478,622,699.89/56,781
6. Step 6: Final answer
   x = 43,652.33