Finding the Fourth Proportional to 152,126.72, 228,190.72 and 99,866.88

Step by Step Solution

1. Step 1: Write the proportion equation
   152,126.72 : 228,190.72 = 99,866.88 : x
2. Step 2: Convert to fraction form
   152,126.72/228,190.72 = 99,866.88/x
3. Step 3: Cross multiply
   152,126.72x = 228,190.72 × 99,866.88
4. Step 4: Simplify right side
   152,126.72x = 22,788,695,251.35
5. Step 5: Solve for x
   x = 22,788,695,251.35/152,126.72
6. Step 6: Final answer
   x = 149,800.74