Finding the Fourth Proportional to 216,557,118.56, 298,851,124.88 and 117,438,060.16

Step by Step Solution

1. Step 1: Write the proportion equation
   216,557,118.56 : 298,851,124.88 = 117,438,060.16 : x
2. Step 2: Convert to fraction form
   216,557,118.56/298,851,124.88 = 117,438,060.16/x
3. Step 3: Cross multiply
   216,557,118.56x = 298,851,124.88 × 117,438,060.16
4. Step 4: Simplify right side
   216,557,118.56x = 35,096,496,382,541,112
5. Step 5: Solve for x
   x = 35,096,496,382,541,112/216,557,118.56
6. Step 6: Final answer
   x = 162,065,770.99