Finding the Fourth Proportional to 429,300.69, 643,814.29 and 141,045.41

Step by Step Solution

1. Step 1: Write the proportion equation
   429,300.69 : 643,814.29 = 141,045.41 : x
2. Step 2: Convert to fraction form
   429,300.69/643,814.29 = 141,045.41/x
3. Step 3: Cross multiply
   429,300.69x = 643,814.29 × 141,045.41
4. Step 4: Simplify right side
   429,300.69x = 90,807,046,925.22
5. Step 5: Solve for x
   x = 90,807,046,925.22/429,300.69
6. Step 6: Final answer
   x = 211,523.18