Finding the Fourth Proportional to 123,901.63, 170,980.93 and 72,917.37

Step by Step Solution

1. Step 1: Write the proportion equation
   123,901.63 : 170,980.93 = 72,917.37 : x
2. Step 2: Convert to fraction form
   123,901.63/170,980.93 = 72,917.37/x
3. Step 3: Cross multiply
   123,901.63x = 170,980.93 × 72,917.37
4. Step 4: Simplify right side
   123,901.63x = 12,467,478,912.28
5. Step 5: Solve for x
   x = 12,467,478,912.28/123,901.63
6. Step 6: Final answer
   x = 100,624.01