Finding the Fourth Proportional to 28,200,957.31, 42,301,581.94 and 12,837,502.71

Step by Step Solution

1. Step 1: Write the proportion equation
   28,200,957.31 : 42,301,581.94 = 12,837,502.71 : x
2. Step 2: Convert to fraction form
   28,200,957.31/42,301,581.94 = 12,837,502.71/x
3. Step 3: Cross multiply
   28,200,957.31x = 42,301,581.94 × 12,837,502.71
4. Step 4: Simplify right side
   28,200,957.31x = 543,046,672,808,083.94
5. Step 5: Solve for x
   x = 543,046,672,808,083.94/28,200,957.31
6. Step 6: Final answer
   x = 19,256,320.51