Finding the Fourth Proportional to 52,408.88, 78,588.96 and 19,105.76

Step by Step Solution

1. Step 1: Write the proportion equation
   52,408.88 : 78,588.96 = 19,105.76 : x
2. Step 2: Convert to fraction form
   52,408.88/78,588.96 = 19,105.76/x
3. Step 3: Cross multiply
   52,408.88x = 78,588.96 × 19,105.76
4. Step 4: Simplify right side
   52,408.88x = 1,501,501,808.41
5. Step 5: Solve for x
   x = 1,501,501,808.41/52,408.88
6. Step 6: Final answer
   x = 28,649.76