Finding the Fourth Proportional to 136,773.40, 188,521.34 and 91,434.82

Step by Step Solution

1. Step 1: Write the proportion equation
   136,773.40 : 188,521.34 = 91,434.82 : x
2. Step 2: Convert to fraction form
   136,773.40/188,521.34 = 91,434.82/x
3. Step 3: Cross multiply
   136,773.40x = 188,521.34 × 91,434.82
4. Step 4: Simplify right side
   136,773.40x = 17,237,415,031.78
5. Step 5: Solve for x
   x = 17,237,415,031.78/136,773.40
6. Step 6: Final answer
   x = 126,029.00