Finding the Fourth Proportional to 28,318,685.31, 42,460,942.91 and 10,812,385.62

Step by Step Solution

1. Step 1: Write the proportion equation
   28,318,685.31 : 42,460,942.91 = 10,812,385.62 : x
2. Step 2: Convert to fraction form
   28,318,685.31/42,460,942.91 = 10,812,385.62/x
3. Step 3: Cross multiply
   28,318,685.31x = 42,460,942.91 × 10,812,385.62
4. Step 4: Simplify right side
   28,318,685.31x = 459,104,088,477,663
5. Step 5: Solve for x
   x = 459,104,088,477,663/28,318,685.31
6. Step 6: Final answer
   x = 16,212,055.17