Finding the Fourth Proportional to 107,907.08, 148,858.85 and 72,105.89

Step by Step Solution

1. Step 1: Write the proportion equation
   107,907.08 : 148,858.85 = 72,105.89 : x
2. Step 2: Convert to fraction form
   107,907.08/148,858.85 = 72,105.89/x
3. Step 3: Cross multiply
   107,907.08x = 148,858.85 × 72,105.89
4. Step 4: Simplify right side
   107,907.08x = 10,733,599,503.10
5. Step 5: Solve for x
   x = 10,733,599,503.10/107,907.08
6. Step 6: Final answer
   x = 99,470.76