Finding the Fourth Proportional to 403,007,196.60, 604,488,056.58 and 178,594,258.50

Step by Step Solution

1. Step 1: Write the proportion equation
   403,007,196.60 : 604,488,056.58 = 178,594,258.50 : x
2. Step 2: Convert to fraction form
   403,007,196.60/604,488,056.58 = 178,594,258.50/x
3. Step 3: Cross multiply
   403,007,196.60x = 604,488,056.58 × 178,594,258.50
4. Step 4: Simplify right side
   403,007,196.60x = 107,958,096,237,011,152
5. Step 5: Solve for x
   x = 107,958,096,237,011,152/403,007,196.60
6. Step 6: Final answer
   x = 267,881,311.17