Finding the Fourth Proportional to 233,090,300.52, 321,660,741.06 and 128,665,670.76

Step by Step Solution

1. Step 1: Write the proportion equation
   233,090,300.52 : 321,660,741.06 = 128,665,670.76 : x
2. Step 2: Convert to fraction form
   233,090,300.52/321,660,741.06 = 128,665,670.76/x
3. Step 3: Cross multiply
   233,090,300.52x = 321,660,741.06 × 128,665,670.76
4. Step 4: Simplify right side
   233,090,300.52x = 41,386,695,005,643,576
5. Step 5: Solve for x
   x = 41,386,695,005,643,576/233,090,300.52
6. Step 6: Final answer
   x = 177,556,487.39