Finding the Fourth Proportional to 116,429,059.20, 163,239,561.60 and 116,429,059.20

Step by Step Solution

1. Step 1: Write the proportion equation
   116,429,059.20 : 163,239,561.60 = 116,429,059.20 : x
2. Step 2: Convert to fraction form
   116,429,059.20/163,239,561.60 = 116,429,059.20/x
3. Step 3: Cross multiply
   116,429,059.20x = 163,239,561.60 × 116,429,059.20
4. Step 4: Simplify right side
   116,429,059.20x = 19,005,828,581,308,448
5. Step 5: Solve for x
   x = 19,005,828,581,308,448/116,429,059.20
6. Step 6: Final answer
   x = 163,239,561.60