Finding the Fourth Proportional to 103,521.69, 142,865.00 and 58,213.94

Step by Step Solution

1. Step 1: Write the proportion equation
   103,521.69 : 142,865.00 = 58,213.94 : x
2. Step 2: Convert to fraction form
   103,521.69/142,865.00 = 58,213.94/x
3. Step 3: Cross multiply
   103,521.69x = 142,865.00 × 58,213.94
4. Step 4: Simplify right side
   103,521.69x = 8,316,733,751.01
5. Step 5: Solve for x
   x = 8,316,733,751.01/103,521.69
6. Step 6: Final answer
   x = 80,338.08