Finding the Fourth Proportional to 103,616.96, 142,980.59 and 58,291.08

Step by Step Solution

1. Step 1: Write the proportion equation
   103,616.96 : 142,980.59 = 58,291.08 : x
2. Step 2: Convert to fraction form
   103,616.96/142,980.59 = 58,291.08/x
3. Step 3: Cross multiply
   103,616.96x = 142,980.59 × 58,291.08
4. Step 4: Simplify right side
   103,616.96x = 8,334,492,619.69
5. Step 5: Solve for x
   x = 8,334,492,619.69/103,616.96
6. Step 6: Final answer
   x = 80,435.61