Finding the Fourth Proportional to 112,796.60, 155,864.61 and 107,330.72

Step by Step Solution

1. Step 1: Write the proportion equation
   112,796.60 : 155,864.61 = 107,330.72 : x
2. Step 2: Convert to fraction form
   112,796.60/155,864.61 = 107,330.72/x
3. Step 3: Cross multiply
   112,796.60x = 155,864.61 × 107,330.72
4. Step 4: Simplify right side
   112,796.60x = 16,729,060,034.50
5. Step 5: Solve for x
   x = 16,729,060,034.50/112,796.60
6. Step 6: Final answer
   x = 148,311.75