Finding the Fourth Proportional to 420,061,374.72, 630,086,993.63 and 109,141,478.69

Step by Step Solution

1. Step 1: Write the proportion equation
   420,061,374.72 : 630,086,993.63 = 109,141,478.69 : x
2. Step 2: Convert to fraction form
   420,061,374.72/630,086,993.63 = 109,141,478.69/x
3. Step 3: Cross multiply
   420,061,374.72x = 630,086,993.63 × 109,141,478.69
4. Step 4: Simplify right side
   420,061,374.72x = 68,768,626,184,418,672
5. Step 5: Solve for x
   x = 68,768,626,184,418,672/420,061,374.72
6. Step 6: Final answer
   x = 163,710,901.13