Finding the Fourth Proportional to 136,968.52, 205,452.80 and 37,128.72

Step by Step Solution

1. Step 1: Write the proportion equation
   136,968.52 : 205,452.80 = 37,128.72 : x
2. Step 2: Convert to fraction form
   136,968.52/205,452.80 = 37,128.72/x
3. Step 3: Cross multiply
   136,968.52x = 205,452.80 × 37,128.72
4. Step 4: Simplify right side
   136,968.52x = 7,628,199,484.42
5. Step 5: Solve for x
   x = 7,628,199,484.42/136,968.52
6. Step 6: Final answer
   x = 55,693.09