Finding the Fourth Proportional to 271,051.88, 406,498.74 and 91,116.96

Step by Step Solution

1. Step 1: Write the proportion equation
   271,051.88 : 406,498.74 = 91,116.96 : x
2. Step 2: Convert to fraction form
   271,051.88/406,498.74 = 91,116.96/x
3. Step 3: Cross multiply
   271,051.88x = 406,498.74 × 91,116.96
4. Step 4: Simplify right side
   271,051.88x = 37,038,929,432.63
5. Step 5: Solve for x
   x = 37,038,929,432.63/271,051.88
6. Step 6: Final answer
   x = 136,648.86