Finding the Fourth Proportional to 114,978.42, 158,670.18 and 64,677.42

Step by Step Solution

1. Step 1: Write the proportion equation
   114,978.42 : 158,670.18 = 64,677.42 : x
2. Step 2: Convert to fraction form
   114,978.42/158,670.18 = 64,677.42/x
3. Step 3: Cross multiply
   114,978.42x = 158,670.18 × 64,677.42
4. Step 4: Simplify right side
   114,978.42x = 10,262,377,873.34
5. Step 5: Solve for x
   x = 10,262,377,873.34/114,978.42
6. Step 6: Final answer
   x = 89,254.82