Finding the Fourth Proportional to 91,714.05, 137,407.05 and 78,592.05

Step by Step Solution

1. Step 1: Write the proportion equation
   91,714.05 : 137,407.05 = 78,592.05 : x
2. Step 2: Convert to fraction form
   91,714.05/137,407.05 = 78,592.05/x
3. Step 3: Cross multiply
   91,714.05x = 137,407.05 × 78,592.05
4. Step 4: Simplify right side
   91,714.05x = 10,799,101,743.95
5. Step 5: Solve for x
   x = 10,799,101,743.95/91,714.05
6. Step 6: Final answer
   x = 117,747.52