Finding the Fourth Proportional to 110,390.02, 166,328.95 and 91,100.68

Step by Step Solution

1. Step 1: Write the proportion equation
   110,390.02 : 166,328.95 = 91,100.68 : x
2. Step 2: Convert to fraction form
   110,390.02/166,328.95 = 91,100.68/x
3. Step 3: Cross multiply
   110,390.02x = 166,328.95 × 91,100.68
4. Step 4: Simplify right side
   110,390.02x = 15,152,680,448.69
5. Step 5: Solve for x
   x = 15,152,680,448.69/110,390.02
6. Step 6: Final answer
   x = 137,264.95