Finding the Fourth Proportional to 114,978.36, 158,670.18 and 64,677.40

Step by Step Solution

1. Step 1: Write the proportion equation
   114,978.36 : 158,670.18 = 64,677.40 : x
2. Step 2: Convert to fraction form
   114,978.36/158,670.18 = 64,677.40/x
3. Step 3: Cross multiply
   114,978.36x = 158,670.18 × 64,677.40
4. Step 4: Simplify right side
   114,978.36x = 10,262,374,699.93
5. Step 5: Solve for x
   x = 10,262,374,699.93/114,978.36
6. Step 6: Final answer
   x = 89,254.84