Finding the Fourth Proportional to 42,921,300.87, 64,381,967.71 and 10,573,832.21

Step by Step Solution

1. Step 1: Write the proportion equation
   42,921,300.87 : 64,381,967.71 = 10,573,832.21 : x
2. Step 2: Convert to fraction form
   42,921,300.87/64,381,967.71 = 10,573,832.21/x
3. Step 3: Cross multiply
   42,921,300.87x = 64,381,967.71 × 10,573,832.21
4. Step 4: Simplify right side
   42,921,300.87x = 680,764,123,566,833.50
5. Step 5: Solve for x
   x = 680,764,123,566,833.50/42,921,300.87
6. Step 6: Final answer
   x = 15,860,752.35