Finding the Fourth Proportional to 136,513.86, 188,404.38 and 76,090.02

Step by Step Solution

1. Step 1: Write the proportion equation
   136,513.86 : 188,404.38 = 76,090.02 : x
2. Step 2: Convert to fraction form
   136,513.86/188,404.38 = 76,090.02/x
3. Step 3: Cross multiply
   136,513.86x = 188,404.38 × 76,090.02
4. Step 4: Simplify right side
   136,513.86x = 14,335,693,042.29
5. Step 5: Solve for x
   x = 14,335,693,042.29/136,513.86
6. Step 6: Final answer
   x = 105,012.73