Finding the Fourth Proportional to 42,123.60, 59,050.80 and 42,123.60

Step by Step Solution

1. Step 1: Write the proportion equation
   42,123.60 : 59,050.80 = 42,123.60 : x
2. Step 2: Convert to fraction form
   42,123.60/59,050.80 = 42,123.60/x
3. Step 3: Cross multiply
   42,123.60x = 59,050.80 × 42,123.60
4. Step 4: Simplify right side
   42,123.60x = 2,487,432,278.88
5. Step 5: Solve for x
   x = 2,487,432,278.88/42,123.60
6. Step 6: Final answer
   x = 59,050.80