Finding the Fourth Proportional to 257,500,784.08, 355,360,426.59 and 147,513,754.72

Step by Step Solution

1. Step 1: Write the proportion equation
   257,500,784.08 : 355,360,426.59 = 147,513,754.72 : x
2. Step 2: Convert to fraction form
   257,500,784.08/355,360,426.59 = 147,513,754.72/x
3. Step 3: Cross multiply
   257,500,784.08x = 355,360,426.59 × 147,513,754.72
4. Step 4: Simplify right side
   257,500,784.08x = 52,420,550,805,191,824
5. Step 5: Solve for x
   x = 52,420,550,805,191,824/257,500,784.08
6. Step 6: Final answer
   x = 203,574,334.71