Finding the Fourth Proportional to 156,734.99, 216,360.50 and 105,816.69

Step by Step Solution

1. Step 1: Write the proportion equation
   156,734.99 : 216,360.50 = 105,816.69 : x
2. Step 2: Convert to fraction form
   156,734.99/216,360.50 = 105,816.69/x
3. Step 3: Cross multiply
   156,734.99x = 216,360.50 × 105,816.69
4. Step 4: Simplify right side
   156,734.99x = 22,894,550,886.76
5. Step 5: Solve for x
   x = 22,894,550,886.76/156,734.99
6. Step 6: Final answer
   x = 146,071.73