Finding the Fourth Proportional to 136,773.47, 188,521.43 and 91,434.89

Step by Step Solution

1. Step 1: Write the proportion equation
   136,773.47 : 188,521.43 = 91,434.89 : x
2. Step 2: Convert to fraction form
   136,773.47/188,521.43 = 91,434.89/x
3. Step 3: Cross multiply
   136,773.47x = 188,521.43 × 91,434.89
4. Step 4: Simplify right side
   136,773.47x = 17,237,434,814.91
5. Step 5: Solve for x
   x = 17,237,434,814.91/136,773.47
6. Step 6: Final answer
   x = 126,029.09