Finding the Fourth Proportional to 109,073.07, 163,442.60 and 73,402.15

Step by Step Solution

1. Step 1: Write the proportion equation
   109,073.07 : 163,442.60 = 73,402.15 : x
2. Step 2: Convert to fraction form
   109,073.07/163,442.60 = 73,402.15/x
3. Step 3: Cross multiply
   109,073.07x = 163,442.60 × 73,402.15
4. Step 4: Simplify right side
   109,073.07x = 11,997,038,241.59
5. Step 5: Solve for x
   x = 11,997,038,241.59/109,073.07
6. Step 6: Final answer
   x = 109,990.84