Finding the Fourth Proportional to 109,486.78, 151,091.86 and 64,155.74

Step by Step Solution

1. Step 1: Write the proportion equation
   109,486.78 : 151,091.86 = 64,155.74 : x
2. Step 2: Convert to fraction form
   109,486.78/151,091.86 = 64,155.74/x
3. Step 3: Cross multiply
   109,486.78x = 151,091.86 × 64,155.74
4. Step 4: Simplify right side
   109,486.78x = 9,693,410,086.28
5. Step 5: Solve for x
   x = 9,693,410,086.28/109,486.78
6. Step 6: Final answer
   x = 88,534.98