Finding the Fourth Proportional to 156,300.68, 215,615.57 and 98,843.23

Step by Step Solution

1. Step 1: Write the proportion equation
   156,300.68 : 215,615.57 = 98,843.23 : x
2. Step 2: Convert to fraction form
   156,300.68/215,615.57 = 98,843.23/x
3. Step 3: Cross multiply
   156,300.68x = 215,615.57 × 98,843.23
4. Step 4: Simplify right side
   156,300.68x = 21,312,139,377.09
5. Step 5: Solve for x
   x = 21,312,139,377.09/156,300.68
6. Step 6: Final answer
   x = 136,353.47