Finding the Fourth Proportional to 90,562.34, 124,976.50 and 56,590.58

Step by Step Solution

1. Step 1: Write the proportion equation
   90,562.34 : 124,976.50 = 56,590.58 : x
2. Step 2: Convert to fraction form
   90,562.34/124,976.50 = 56,590.58/x
3. Step 3: Cross multiply
   90,562.34x = 124,976.50 × 56,590.58
4. Step 4: Simplify right side
   90,562.34x = 7,072,492,792.33
5. Step 5: Solve for x
   x = 7,072,492,792.33/90,562.34
6. Step 6: Final answer
   x = 78,095.29