Finding the Fourth Proportional to 58,123.72, 79,686.65 and 57,073.96

Step by Step Solution

1. Step 1: Write the proportion equation
   58,123.72 : 79,686.65 = 57,073.96 : x
2. Step 2: Convert to fraction form
   58,123.72/79,686.65 = 57,073.96/x
3. Step 3: Cross multiply
   58,123.72x = 79,686.65 × 57,073.96
4. Step 4: Simplify right side
   58,123.72x = 4,548,032,674.63
5. Step 5: Solve for x
   x = 4,548,032,674.63/58,123.72
6. Step 6: Final answer
   x = 78,247.45