Finding the Fourth Proportional to 109,978.53, 164,688.62 and 92,162.34

Step by Step Solution

1. Step 1: Write the proportion equation
   109,978.53 : 164,688.62 = 92,162.34 : x
2. Step 2: Convert to fraction form
   109,978.53/164,688.62 = 92,162.34/x
3. Step 3: Cross multiply
   109,978.53x = 164,688.62 × 92,162.34
4. Step 4: Simplify right side
   109,978.53x = 15,178,089,083.75
5. Step 5: Solve for x
   x = 15,178,089,083.75/109,978.53
6. Step 6: Final answer
   x = 138,009.56