Finding the Fourth Proportional to 105,047.61, 157,440.18 and 67,507.77

Step by Step Solution

1. Step 1: Write the proportion equation
   105,047.61 : 157,440.18 = 67,507.77 : x
2. Step 2: Convert to fraction form
   105,047.61/157,440.18 = 67,507.77/x
3. Step 3: Cross multiply
   105,047.61x = 157,440.18 × 67,507.77
4. Step 4: Simplify right side
   105,047.61x = 10,628,435,460.20
5. Step 5: Solve for x
   x = 10,628,435,460.20/105,047.61
6. Step 6: Final answer
   x = 101,177.32