Finding the Fourth Proportional to 117,703.48, 176,499.94 and 42,770.78

Step by Step Solution

1. Step 1: Write the proportion equation
   117,703.48 : 176,499.94 = 42,770.78 : x
2. Step 2: Convert to fraction form
   117,703.48/176,499.94 = 42,770.78/x
3. Step 3: Cross multiply
   117,703.48x = 176,499.94 × 42,770.78
4. Step 4: Simplify right side
   117,703.48x = 7,549,040,103.75
5. Step 5: Solve for x
   x = 7,549,040,103.75/117,703.48
6. Step 6: Final answer
   x = 64,136.08