Finding the Fourth Proportional to 121,196.08, 181,877.15 and 42,310.30

Step by Step Solution

1. Step 1: Write the proportion equation
   121,196.08 : 181,877.15 = 42,310.30 : x
2. Step 2: Convert to fraction form
   121,196.08/181,877.15 = 42,310.30/x
3. Step 3: Cross multiply
   121,196.08x = 181,877.15 × 42,310.30
4. Step 4: Simplify right side
   121,196.08x = 7,695,276,779.65
5. Step 5: Solve for x
   x = 7,695,276,779.65/121,196.08
6. Step 6: Final answer
   x = 63,494.44