Finding the Fourth Proportional to 42,118,950, 63,170,435.16 and 20,531,840.88

Step by Step Solution

1. Step 1: Write the proportion equation
   42,118,950 : 63,170,435.16 = 20,531,840.88 : x
2. Step 2: Convert to fraction form
   42,118,950/63,170,435.16 = 20,531,840.88/x
3. Step 3: Cross multiply
   42,118,950x = 63,170,435.16 × 20,531,840.88
4. Step 4: Simplify right side
   42,118,950x = 1,297,005,323,025,477.25
5. Step 5: Solve for x
   x = 1,297,005,323,025,477.25/42,118,950
6. Step 6: Final answer
   x = 30,793,866.49