Finding the Fourth Proportional to 106,901.59, 147,426.73 and 91,789.51

Step by Step Solution

1. Step 1: Write the proportion equation
   106,901.59 : 147,426.73 = 91,789.51 : x
2. Step 2: Convert to fraction form
   106,901.59/147,426.73 = 91,789.51/x
3. Step 3: Cross multiply
   106,901.59x = 147,426.73 × 91,789.51
4. Step 4: Simplify right side
   106,901.59x = 13,532,227,307.60
5. Step 5: Solve for x
   x = 13,532,227,307.60/106,901.59
6. Step 6: Final answer
   x = 126,585.84