Finding the Fourth Proportional to 128,551.93, 192,796.42 and 53,672.69

Step by Step Solution

1. Step 1: Write the proportion equation
   128,551.93 : 192,796.42 = 53,672.69 : x
2. Step 2: Convert to fraction form
   128,551.93/192,796.42 = 53,672.69/x
3. Step 3: Cross multiply
   128,551.93x = 192,796.42 × 53,672.69
4. Step 4: Simplify right side
   128,551.93x = 10,347,902,483.77
5. Step 5: Solve for x
   x = 10,347,902,483.77/128,551.93
6. Step 6: Final answer
   x = 80,495.89