Finding the Fourth Proportional to 107,437.94, 148,309.82 and 72,520.16

Step by Step Solution

1. Step 1: Write the proportion equation
   107,437.94 : 148,309.82 = 72,520.16 : x
2. Step 2: Convert to fraction form
   107,437.94/148,309.82 = 72,520.16/x
3. Step 3: Cross multiply
   107,437.94x = 148,309.82 × 72,520.16
4. Step 4: Simplify right side
   107,437.94x = 10,755,450,771.82
5. Step 5: Solve for x
   x = 10,755,450,771.82/107,437.94
6. Step 6: Final answer
   x = 100,108.50