Finding the Fourth Proportional to 52,427.86, 78,644.52 and 19,158.12

Step by Step Solution

1. Step 1: Write the proportion equation
   52,427.86 : 78,644.52 = 19,158.12 : x
2. Step 2: Convert to fraction form
   52,427.86/78,644.52 = 19,158.12/x
3. Step 3: Cross multiply
   52,427.86x = 78,644.52 × 19,158.12
4. Step 4: Simplify right side
   52,427.86x = 1,506,681,151.50
5. Step 5: Solve for x
   x = 1,506,681,151.50/52,427.86
6. Step 6: Final answer
   x = 28,738.18