Finding the Fourth Proportional to 64,795.69, 89,434.74 and 42,191.11

Step by Step Solution

1. Step 1: Write the proportion equation
   64,795.69 : 89,434.74 = 42,191.11 : x
2. Step 2: Convert to fraction form
   64,795.69/89,434.74 = 42,191.11/x
3. Step 3: Cross multiply
   64,795.69x = 89,434.74 × 42,191.11
4. Step 4: Simplify right side
   64,795.69x = 3,773,350,953.16
5. Step 5: Solve for x
   x = 3,773,350,953.16/64,795.69
6. Step 6: Final answer
   x = 58,234.60