Finding the Fourth Proportional to 109,781.86, 151,440.52 and 66,774.50

Step by Step Solution

1. Step 1: Write the proportion equation
   109,781.86 : 151,440.52 = 66,774.50 : x
2. Step 2: Convert to fraction form
   109,781.86/151,440.52 = 66,774.50/x
3. Step 3: Cross multiply
   109,781.86x = 151,440.52 × 66,774.50
4. Step 4: Simplify right side
   109,781.86x = 10,112,365,479.34
5. Step 5: Solve for x
   x = 10,112,365,479.34/109,781.86
6. Step 6: Final answer
   x = 92,113.27