Finding the Fourth Proportional to 56,752.94, 78,322.59 and 31,259.30

Step by Step Solution

1. Step 1: Write the proportion equation
   56,752.94 : 78,322.59 = 31,259.30 : x
2. Step 2: Convert to fraction form
   56,752.94/78,322.59 = 31,259.30/x
3. Step 3: Cross multiply
   56,752.94x = 78,322.59 × 31,259.30
4. Step 4: Simplify right side
   56,752.94x = 2,448,308,945.97
5. Step 5: Solve for x
   x = 2,448,308,945.97/56,752.94
6. Step 6: Final answer
   x = 43,139.78