Finding the Fourth Proportional to 153,405,065.35, 211,697,592.69 and 83,790,427.78

Step by Step Solution

1. Step 1: Write the proportion equation
   153,405,065.35 : 211,697,592.69 = 83,790,427.78 : x
2. Step 2: Convert to fraction form
   153,405,065.35/211,697,592.69 = 83,790,427.78/x
3. Step 3: Cross multiply
   153,405,065.35x = 211,697,592.69 × 83,790,427.78
4. Step 4: Simplify right side
   153,405,065.35x = 17,738,231,851,491,300
5. Step 5: Solve for x
   x = 17,738,231,851,491,300/153,405,065.35
6. Step 6: Final answer
   x = 115,630,027.02