Finding the Fourth Proportional to 42,573.93, 58,326.59 and 40,977.78

Step by Step Solution

1. Step 1: Write the proportion equation
   42,573.93 : 58,326.59 = 40,977.78 : x
2. Step 2: Convert to fraction form
   42,573.93/58,326.59 = 40,977.78/x
3. Step 3: Cross multiply
   42,573.93x = 58,326.59 × 40,977.78
4. Step 4: Simplify right side
   42,573.93x = 2,390,094,173.17
5. Step 5: Solve for x
   x = 2,390,094,173.17/42,573.93
6. Step 6: Final answer
   x = 56,139.85