Finding the Fourth Proportional to 85,488.54, 128,269.71 and 46,037.79

Step by Step Solution

1. Step 1: Write the proportion equation
   85,488.54 : 128,269.71 = 46,037.79 : x
2. Step 2: Convert to fraction form
   85,488.54/128,269.71 = 46,037.79/x
3. Step 3: Cross multiply
   85,488.54x = 128,269.71 × 46,037.79
4. Step 4: Simplify right side
   85,488.54x = 5,905,253,972.34
5. Step 5: Solve for x
   x = 5,905,253,972.34/85,488.54
6. Step 6: Final answer
   x = 69,076.56