Finding the Fourth Proportional to 149,712.89, 206,638.52 and 98,734.82

Step by Step Solution

1. Step 1: Write the proportion equation
   149,712.89 : 206,638.52 = 98,734.82 : x
2. Step 2: Convert to fraction form
   149,712.89/206,638.52 = 98,734.82/x
3. Step 3: Cross multiply
   149,712.89x = 206,638.52 × 98,734.82
4. Step 4: Simplify right side
   149,712.89x = 20,402,417,077.27
5. Step 5: Solve for x
   x = 20,402,417,077.27/149,712.89
6. Step 6: Final answer
   x = 136,276.96