Finding the Fourth Proportional to 56,380.68, 77,799.06 and 31,223.88

Step by Step Solution

1. Step 1: Write the proportion equation
   56,380.68 : 77,799.06 = 31,223.88 : x
2. Step 2: Convert to fraction form
   56,380.68/77,799.06 = 31,223.88/x
3. Step 3: Cross multiply
   56,380.68x = 77,799.06 × 31,223.88
4. Step 4: Simplify right side
   56,380.68x = 2,429,188,513.55
5. Step 5: Solve for x
   x = 2,429,188,513.55/56,380.68
6. Step 6: Final answer
   x = 43,085.48