Finding the Fourth Proportional to 56,415, 77,852.70 and 31,266.12

Step by Step Solution

1. Step 1: Write the proportion equation
   56,415 : 77,852.70 = 31,266.12 : x
2. Step 2: Convert to fraction form
   56,415/77,852.70 = 31,266.12/x
3. Step 3: Cross multiply
   56,415x = 77,852.70 × 31,266.12
4. Step 4: Simplify right side
   56,415x = 2,434,151,860.52
5. Step 5: Solve for x
   x = 2,434,151,860.52/56,415
6. Step 6: Final answer
   x = 43,147.25