Finding the Fourth Proportional to 112,290.90, 154,921.56 and 72,026.34

Step by Step Solution

1. Step 1: Write the proportion equation
   112,290.90 : 154,921.56 = 72,026.34 : x
2. Step 2: Convert to fraction form
   112,290.90/154,921.56 = 72,026.34/x
3. Step 3: Cross multiply
   112,290.90x = 154,921.56 × 72,026.34
4. Step 4: Simplify right side
   112,290.90x = 11,158,432,953.89
5. Step 5: Solve for x
   x = 11,158,432,953.89/112,290.90
6. Step 6: Final answer
   x = 99,370.77