Finding the Fourth Proportional to 130,870.32, 196,336.80 and 42,132.12

Step by Step Solution

1. Step 1: Write the proportion equation
   130,870.32 : 196,336.80 = 42,132.12 : x
2. Step 2: Convert to fraction form
   130,870.32/196,336.80 = 42,132.12/x
3. Step 3: Cross multiply
   130,870.32x = 196,336.80 × 42,132.12
4. Step 4: Simplify right side
   130,870.32x = 8,272,085,618.02
5. Step 5: Solve for x
   x = 8,272,085,618.02/130,870.32
6. Step 6: Final answer
   x = 63,208.26