Finding the Fourth Proportional to 30,688,326.56, 42,349,681.68 and 16,937,290.72

Step by Step Solution

1. Step 1: Write the proportion equation
   30,688,326.56 : 42,349,681.68 = 16,937,290.72 : x
2. Step 2: Convert to fraction form
   30,688,326.56/42,349,681.68 = 16,937,290.72/x
3. Step 3: Cross multiply
   30,688,326.56x = 42,349,681.68 × 16,937,290.72
4. Step 4: Simplify right side
   30,688,326.56x = 717,288,870,513,618
5. Step 5: Solve for x
   x = 717,288,870,513,618/30,688,326.56
6. Step 6: Final answer
   x = 23,373,345.86