Finding the Fourth Proportional to 109,659.42, 164,478.06 and 74,347.47

Step by Step Solution

1. Step 1: Write the proportion equation
   109,659.42 : 164,478.06 = 74,347.47 : x
2. Step 2: Convert to fraction form
   109,659.42/164,478.06 = 74,347.47/x
3. Step 3: Cross multiply
   109,659.42x = 164,478.06 × 74,347.47
4. Step 4: Simplify right side
   109,659.42x = 12,228,527,631.51
5. Step 5: Solve for x
   x = 12,228,527,631.51/109,659.42
6. Step 6: Final answer
   x = 111,513.70