Finding the Fourth Proportional to 52,091.31, 78,139.13 and 15,155.31

Step by Step Solution

1. Step 1: Write the proportion equation
   52,091.31 : 78,139.13 = 15,155.31 : x
2. Step 2: Convert to fraction form
   52,091.31/78,139.13 = 15,155.31/x
3. Step 3: Cross multiply
   52,091.31x = 78,139.13 × 15,155.31
4. Step 4: Simplify right side
   52,091.31x = 1,184,222,738.28
5. Step 5: Solve for x
   x = 1,184,222,738.28/52,091.31
6. Step 6: Final answer
   x = 22,733.59