Finding the Fourth Proportional to 56,679.57, 78,216.78 and 38,773.98

Step by Step Solution

1. Step 1: Write the proportion equation
   56,679.57 : 78,216.78 = 38,773.98 : x
2. Step 2: Convert to fraction form
   56,679.57/78,216.78 = 38,773.98/x
3. Step 3: Cross multiply
   56,679.57x = 78,216.78 × 38,773.98
4. Step 4: Simplify right side
   56,679.57x = 3,032,775,863.38
5. Step 5: Solve for x
   x = 3,032,775,863.38/56,679.57
6. Step 6: Final answer
   x = 53,507.39