Finding the Fourth Proportional to 58,435.08, 80,590.74 and 49,404.48

Step by Step Solution

1. Step 1: Write the proportion equation
   58,435.08 : 80,590.74 = 49,404.48 : x
2. Step 2: Convert to fraction form
   58,435.08/80,590.74 = 49,404.48/x
3. Step 3: Cross multiply
   58,435.08x = 80,590.74 × 49,404.48
4. Step 4: Simplify right side
   58,435.08x = 3,981,543,602.52
5. Step 5: Solve for x
   x = 3,981,543,602.52/58,435.08
6. Step 6: Final answer
   x = 68,136.19