Finding the Fourth Proportional to 136,045.89, 204,070.89 and 51,810.72

Step by Step Solution

1. Step 1: Write the proportion equation
   136,045.89 : 204,070.89 = 51,810.72 : x
2. Step 2: Convert to fraction form
   136,045.89/204,070.89 = 51,810.72/x
3. Step 3: Cross multiply
   136,045.89x = 204,070.89 × 51,810.72
4. Step 4: Simplify right side
   136,045.89x = 10,573,059,170.97
5. Step 5: Solve for x
   x = 10,573,059,170.97/136,045.89
6. Step 6: Final answer
   x = 77,716.86