Finding the Fourth Proportional to 143,978.78, 215,656.48 and 93,906.97

Step by Step Solution

1. Step 1: Write the proportion equation
   143,978.78 : 215,656.48 = 93,906.97 : x
2. Step 2: Convert to fraction form
   143,978.78/215,656.48 = 93,906.97/x
3. Step 3: Cross multiply
   143,978.78x = 215,656.48 × 93,906.97
4. Step 4: Simplify right side
   143,978.78x = 20,251,646,597.67
5. Step 5: Solve for x
   x = 20,251,646,597.67/143,978.78
6. Step 6: Final answer
   x = 140,657.16