Finding the Fourth Proportional to 309,423,543.41, 464,084,861.86 and 91,022,808.40

Step by Step Solution

1. Step 1: Write the proportion equation
   309,423,543.41 : 464,084,861.86 = 91,022,808.40 : x
2. Step 2: Convert to fraction form
   309,423,543.41/464,084,861.86 = 91,022,808.40/x
3. Step 3: Cross multiply
   309,423,543.41x = 464,084,861.86 × 91,022,808.40
4. Step 4: Simplify right side
   309,423,543.41x = 42,242,307,462,423,248
5. Step 5: Solve for x
   x = 42,242,307,462,423,248/309,423,543.41
6. Step 6: Final answer
   x = 136,519,370.82