Finding the Fourth Proportional to 52,688.98, 78,996.51 and 19,404.78

Step by Step Solution

1. Step 1: Write the proportion equation
   52,688.98 : 78,996.51 = 19,404.78 : x
2. Step 2: Convert to fraction form
   52,688.98/78,996.51 = 19,404.78/x
3. Step 3: Cross multiply
   52,688.98x = 78,996.51 × 19,404.78
4. Step 4: Simplify right side
   52,688.98x = 1,532,909,897.32
5. Step 5: Solve for x
   x = 1,532,909,897.32/52,688.98
6. Step 6: Final answer
   x = 29,093.56