Finding the Fourth Proportional to 58,697.59, 88,043.14 and 42,918.79

Step by Step Solution

1. Step 1: Write the proportion equation
   58,697.59 : 88,043.14 = 42,918.79 : x
2. Step 2: Convert to fraction form
   58,697.59/88,043.14 = 42,918.79/x
3. Step 3: Cross multiply
   58,697.59x = 88,043.14 × 42,918.79
4. Step 4: Simplify right side
   58,697.59x = 3,778,705,036.60
5. Step 5: Solve for x
   x = 3,778,705,036.60/58,697.59
6. Step 6: Final answer
   x = 64,375.81