Finding the Fourth Proportional to 100,792.76, 139,085.91 and 58,354.02

Step by Step Solution

1. Step 1: Write the proportion equation
   100,792.76 : 139,085.91 = 58,354.02 : x
2. Step 2: Convert to fraction form
   100,792.76/139,085.91 = 58,354.02/x
3. Step 3: Cross multiply
   100,792.76x = 139,085.91 × 58,354.02
4. Step 4: Simplify right side
   100,792.76x = 8,116,221,973.86
5. Step 5: Solve for x
   x = 8,116,221,973.86/100,792.76
6. Step 6: Final answer
   x = 80,523.86