Finding the Fourth Proportional to 103,620.94, 142,991.02 and 58,300.83

Step by Step Solution

1. Step 1: Write the proportion equation
   103,620.94 : 142,991.02 = 58,300.83 : x
2. Step 2: Convert to fraction form
   103,620.94/142,991.02 = 58,300.83/x
3. Step 3: Cross multiply
   103,620.94x = 142,991.02 × 58,300.83
4. Step 4: Simplify right side
   103,620.94x = 8,336,495,148.55
5. Step 5: Solve for x
   x = 8,336,495,148.55/103,620.94
6. Step 6: Final answer
   x = 80,451.84