Finding the Fourth Proportional to 56,919.88, 78,548.52 and 31,426.48

Step by Step Solution

1. Step 1: Write the proportion equation
   56,919.88 : 78,548.52 = 31,426.48 : x
2. Step 2: Convert to fraction form
   56,919.88/78,548.52 = 31,426.48/x
3. Step 3: Cross multiply
   56,919.88x = 78,548.52 × 31,426.48
4. Step 4: Simplify right side
   56,919.88x = 2,468,503,492.81
5. Step 5: Solve for x
   x = 2,468,503,492.81/56,919.88
6. Step 6: Final answer
   x = 43,368.04