Finding the Fourth Proportional to 56,820.28, 78,415.50 and 31,326.52

Step by Step Solution

1. Step 1: Write the proportion equation
   56,820.28 : 78,415.50 = 31,326.52 : x
2. Step 2: Convert to fraction form
   56,820.28/78,415.50 = 31,326.52/x
3. Step 3: Cross multiply
   56,820.28x = 78,415.50 × 31,326.52
4. Step 4: Simplify right side
   56,820.28x = 2,456,484,729.06
5. Step 5: Solve for x
   x = 2,456,484,729.06/56,820.28
6. Step 6: Final answer
   x = 43,232.53