Finding the Fourth Proportional to 171,872,758.17, 257,806,585.76 and 42,480,361.17

Step by Step Solution

1. Step 1: Write the proportion equation
   171,872,758.17 : 257,806,585.76 = 42,480,361.17 : x
2. Step 2: Convert to fraction form
   171,872,758.17/257,806,585.76 = 42,480,361.17/x
3. Step 3: Cross multiply
   171,872,758.17x = 257,806,585.76 × 42,480,361.17
4. Step 4: Simplify right side
   171,872,758.17x = 10,951,716,874,876,978
5. Step 5: Solve for x
   x = 10,951,716,874,876,978/171,872,758.17
6. Step 6: Final answer
   x = 63,719,911.12