Finding the Fourth Proportional to 65,316, 90,155.33 and 42,658.49

Step by Step Solution

1. Step 1: Write the proportion equation
   65,316 : 90,155.33 = 42,658.49 : x
2. Step 2: Convert to fraction form
   65,316/90,155.33 = 42,658.49/x
3. Step 3: Cross multiply
   65,316x = 90,155.33 × 42,658.49
4. Step 4: Simplify right side
   65,316x = 3,845,889,579.18
5. Step 5: Solve for x
   x = 3,845,889,579.18/65,316
6. Step 6: Final answer
   x = 58,881.28