Finding the Fourth Proportional to 92,143.88, 138,071.82 and 64,118.69

Step by Step Solution

1. Step 1: Write the proportion equation
   92,143.88 : 138,071.82 = 64,118.69 : x
2. Step 2: Convert to fraction form
   92,143.88/138,071.82 = 64,118.69/x
3. Step 3: Cross multiply
   92,143.88x = 138,071.82 × 64,118.69
4. Step 4: Simplify right side
   92,143.88x = 8,852,984,224.32
5. Step 5: Solve for x
   x = 8,852,984,224.32/92,143.88
6. Step 6: Final answer
   x = 96,077.83