Finding the Fourth Proportional to 136,047.89, 204,073.89 and 51,812.72

Step by Step Solution

1. Step 1: Write the proportion equation
   136,047.89 : 204,073.89 = 51,812.72 : x
2. Step 2: Convert to fraction form
   136,047.89/204,073.89 = 51,812.72/x
3. Step 3: Cross multiply
   136,047.89x = 204,073.89 × 51,812.72
4. Step 4: Simplify right side
   136,047.89x = 10,573,623,321.88
5. Step 5: Solve for x
   x = 10,573,623,321.88/136,047.89
6. Step 6: Final answer
   x = 77,719.86