Finding the Fourth Proportional to 100,705.30, 151,106.55 and 71,059.30

Step by Step Solution

1. Step 1: Write the proportion equation
   100,705.30 : 151,106.55 = 71,059.30 : x
2. Step 2: Convert to fraction form
   100,705.30/151,106.55 = 71,059.30/x
3. Step 3: Cross multiply
   100,705.30x = 151,106.55 × 71,059.30
4. Step 4: Simplify right side
   100,705.30x = 10,737,525,668.42
5. Step 5: Solve for x
   x = 10,737,525,668.42/100,705.30
6. Step 6: Final answer
   x = 106,623.24