Finding the Fourth Proportional to 101,141.69, 139,570.79 and 58,090.91

Step by Step Solution

1. Step 1: Write the proportion equation
   101,141.69 : 139,570.79 = 58,090.91 : x
2. Step 2: Convert to fraction form
   101,141.69/139,570.79 = 58,090.91/x
3. Step 3: Cross multiply
   101,141.69x = 139,570.79 × 58,090.91
4. Step 4: Simplify right side
   101,141.69x = 8,107,793,212.21
5. Step 5: Solve for x
   x = 8,107,793,212.21/101,141.69
6. Step 6: Final answer
   x = 80,162.73