Finding the Fourth Proportional to 116,426.19, 174,376.71 and 81,521.67

Step by Step Solution

1. Step 1: Write the proportion equation
   116,426.19 : 174,376.71 = 81,521.67 : x
2. Step 2: Convert to fraction form
   116,426.19/174,376.71 = 81,521.67/x
3. Step 3: Cross multiply
   116,426.19x = 174,376.71 × 81,521.67
4. Step 4: Simplify right side
   116,426.19x = 14,215,480,608.31
5. Step 5: Solve for x
   x = 14,215,480,608.31/116,426.19
6. Step 6: Final answer
   x = 122,098.65