Finding the Fourth Proportional to 342,746,434.31, 513,760,859.91 and 143,439,916.82

Step by Step Solution

1. Step 1: Write the proportion equation
   342,746,434.31 : 513,760,859.91 = 143,439,916.82 : x
2. Step 2: Convert to fraction form
   342,746,434.31/513,760,859.91 = 143,439,916.82/x
3. Step 3: Cross multiply
   342,746,434.31x = 513,760,859.91 × 143,439,916.82
4. Step 4: Simplify right side
   342,746,434.31x = 73,693,815,012,146,480
5. Step 5: Solve for x
   x = 73,693,815,012,146,480/342,746,434.31
6. Step 6: Final answer
   x = 215,009,720.41