Finding the Fourth Proportional to 92,322.32, 138,428.06 and 42,339.80

Step by Step Solution

1. Step 1: Write the proportion equation
   92,322.32 : 138,428.06 = 42,339.80 : x
2. Step 2: Convert to fraction form
   92,322.32/138,428.06 = 42,339.80/x
3. Step 3: Cross multiply
   92,322.32x = 138,428.06 × 42,339.80
4. Step 4: Simplify right side
   92,322.32x = 5,861,016,374.79
5. Step 5: Solve for x
   x = 5,861,016,374.79/92,322.32
6. Step 6: Final answer
   x = 63,484.28