Finding the Fourth Proportional to 283,929,890.72, 391,824,429.60 and 153,549,698.72

Step by Step Solution

1. Step 1: Write the proportion equation
   283,929,890.72 : 391,824,429.60 = 153,549,698.72 : x
2. Step 2: Convert to fraction form
   283,929,890.72/391,824,429.60 = 153,549,698.72/x
3. Step 3: Cross multiply
   283,929,890.72x = 391,824,429.60 × 153,549,698.72
4. Step 4: Simplify right side
   283,929,890.72x = 60,164,523,116,215,856
5. Step 5: Solve for x
   x = 60,164,523,116,215,856/283,929,890.72
6. Step 6: Final answer
   x = 211,899,222.60