Finding the Fourth Proportional to 291,155,404.77, 401,846,356.53 and 172,073,134.49

Step by Step Solution

1. Step 1: Write the proportion equation
   291,155,404.77 : 401,846,356.53 = 172,073,134.49 : x
2. Step 2: Convert to fraction form
   291,155,404.77/401,846,356.53 = 172,073,134.49/x
3. Step 3: Cross multiply
   291,155,404.77x = 401,846,356.53 × 172,073,134.49
4. Step 4: Simplify right side
   291,155,404.77x = 69,146,962,149,493,952
5. Step 5: Solve for x
   x = 69,146,962,149,493,952/291,155,404.77
6. Step 6: Final answer
   x = 237,491,597.33